diff --git a/po/pl.po b/po/pl.po
index a319828..2254305 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -3,7 +3,7 @@ msgstr ""
 "Project-Id-Version: plume\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2018-06-15 16:33-0700\n"
-"PO-Revision-Date: 2018-06-17 20:57+0200\n"
+"PO-Revision-Date: 2018-06-19 21:15+0200\n"
 "Last-Translator: Marcin Mikołajczak <me@m4sk.in>\n"
 "Language-Team: none\n"
 "Language: pl\n"
@@ -12,6 +12,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
 "|| n%100>=20) ? 1 : 2);\n"
+"X-Generator: Poedit 2.0.8\n"
 
 msgid "Latest articles"
 msgstr "Najnowsze artykuły"
@@ -117,7 +118,7 @@ msgid "Publish"
 msgstr "Opublikuj"
 
 msgid "Login"
-msgstr ""
+msgstr "Logowanie"
 
 msgid "Username or email"
 msgstr "Nazwa użytkownika lub adres e-mail"
@@ -261,22 +262,22 @@ msgid "By {{ link_1 }}{{ link_2 }}{{ link_3 }}{{ name }}{{ link_4 }}"
 msgstr "Napisano przez {{ link_1 }}{{ url }}{{ link_2 }}{{ name }}{{ link_3 }}"
 
 msgid "{{ data }} reshared your article"
-msgstr ""
+msgstr "{{ data }} udostępnił Twój artykuł"
 
 msgid "{{ data }} started following you"
-msgstr ""
+msgstr "{{ data }} zaczął Cię obserwować"
 
 msgid "{{ data }} liked your article"
-msgstr ""
+msgstr "{{ data }} polubił Twój artykuł"
 
 msgid "{{ data }} commented your article"
-msgstr ""
+msgstr "{{ data }} skomentował Twój artykuł"
 
 msgid "We couldn't find this page."
-msgstr ""
+msgstr "Nie udało się odnaleźć tej strony."
 
 msgid "The link that led you here may be broken."
-msgstr ""
+msgstr "Odnośnik który Cię tu zaprowadził może być uszkodzony."
 
 #~ msgid "Logowanie"
 #~ msgstr "Zaloguj się"
diff --git a/src/models/posts.rs b/src/models/posts.rs
index 8d12bc8..b084dd4 100644
--- a/src/models/posts.rs
+++ b/src/models/posts.rs
@@ -52,7 +52,7 @@ pub struct NewPost {
 impl Post {
     insert!(posts, NewPost);
     get!(posts);
-    find_by!(posts, find_by_slug, slug as String);
+    find_by!(posts, find_by_slug, slug as String, blog_id as i32);
     find_by!(posts, find_by_ap_url, ap_url as String);
 
     pub fn count_local(conn: &PgConnection) -> usize {
diff --git a/src/routes/blogs.rs b/src/routes/blogs.rs
index eecc07f..ce53a64 100644
--- a/src/routes/blogs.rs
+++ b/src/routes/blogs.rs
@@ -46,7 +46,7 @@ fn new(user: User) -> Template {
 
 #[get("/blogs/new", rank = 2)]
 fn new_auth() -> Flash<Redirect>{
-    utils::requires_login("You need to be logged in order to create a new blog", "/blogs/new")
+    utils::requires_login("You need to be logged in order to create a new blog", uri!(new))
 }
 
 #[derive(FromForm)]
@@ -59,21 +59,25 @@ fn create(conn: DbConn, data: Form<NewBlogForm>, user: User) -> Redirect {
     let form = data.get();
     let slug = utils::make_actor_id(form.title.to_string());
 
-    let blog = Blog::insert(&*conn, NewBlog::new_local(
-        slug.to_string(),
-        form.title.to_string(),
-        String::from(""),
-        Instance::local_id(&*conn)
-    ));
-    blog.update_boxes(&*conn);
+    if Blog::find_local(&*conn, slug.clone()).is_some() || slug.len() == 0 {
+        Redirect::to(uri!(new))
+    } else {
+        let blog = Blog::insert(&*conn, NewBlog::new_local(
+            slug.to_string(),
+            form.title.to_string(),
+            String::from(""),
+            Instance::local_id(&*conn)
+        ));
+        blog.update_boxes(&*conn);
 
-    BlogAuthor::insert(&*conn, NewBlogAuthor {
-        blog_id: blog.id,
-        author_id: user.id,
-        is_owner: true
-    });
-    
-    Redirect::to(format!("/~/{}/", slug))
+        BlogAuthor::insert(&*conn, NewBlogAuthor {
+            blog_id: blog.id,
+            author_id: user.id,
+            is_owner: true
+        });
+
+        Redirect::to(uri!(details: name = slug))
+    }
 }
 
 #[get("/~/<name>/outbox")]
diff --git a/src/routes/comments.rs b/src/routes/comments.rs
index 289dee2..49e678b 100644
--- a/src/routes/comments.rs
+++ b/src/routes/comments.rs
@@ -7,6 +7,7 @@ use rocket_contrib::Template;
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     comments::*,
     posts::Post,
     users::User
@@ -15,19 +16,21 @@ use models::{
 use utils;
 use safe_string::SafeString;
 
-#[get("/~/<_blog>/<slug>/comment")]
-fn new(_blog: String, slug: String, user: User, conn: DbConn) -> Template {
-    may_fail!(Post::find_by_slug(&*conn, slug), "Couldn't find this post", |post| {
-        Template::render("comments/new", json!({
-            "post": post,
-            "account": user
-        }))
+#[get("/~/<blog>/<slug>/comment")]
+fn new(blog: String, slug: String, user: User, conn: DbConn) -> Template {
+    may_fail!(Blog::find_by_fqn(&*conn, blog), "Couldn't find this blog", |blog| {
+        may_fail!(Post::find_by_slug(&*conn, slug, blog.id), "Couldn't find this post", |post| {
+            Template::render("comments/new", json!({
+                "post": post,
+                "account": user
+            }))
+        })
     })
 }
 
 #[get("/~/<blog>/<slug>/comment", rank=2)]
 fn new_auth(blog: String, slug: String) -> Flash<Redirect>{
-    utils::requires_login("You need to be logged in order to post a comment", &format!("~/{}/{}/comment", blog, slug))
+    utils::requires_login("You need to be logged in order to post a comment", uri!(new: blog = blog, slug = slug))
 }
 
 #[derive(FromForm)]
@@ -40,9 +43,10 @@ struct NewCommentForm {
     pub content: String
 }
 
-#[post("/~/<blog>/<slug>/comment?<query>", data = "<data>")]
-fn create(blog: String, slug: String, query: CommentQuery, data: Form<NewCommentForm>, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+#[post("/~/<blog_name>/<slug>/comment?<query>", data = "<data>")]
+fn create(blog_name: String, slug: String, query: CommentQuery, data: Form<NewCommentForm>, user: User, conn: DbConn) -> Redirect {
+    let blog = Blog::find_by_fqn(&*conn, blog_name.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), blog.id).unwrap();
     let form = data.get();
     let comment = Comment::insert(&*conn, NewComment {
         content: SafeString::new(&form.content.clone()),
@@ -57,5 +61,5 @@ fn create(blog: String, slug: String, query: CommentQuery, data: Form<NewComment
     Comment::notify(&*conn, comment.into_activity(&*conn), user.clone().into_id());
     broadcast(&*conn, &user, comment.create_activity(&*conn), user.get_followers(&*conn));
 
-    Redirect::to(format!("/~/{}/{}/#comment-{}", blog, slug, comment.id))
+    Redirect::to(format!("/~/{}/{}/#comment-{}", blog_name, slug, comment.id))
 }
diff --git a/src/routes/likes.rs b/src/routes/likes.rs
index 57bae6f..a9e4791 100644
--- a/src/routes/likes.rs
+++ b/src/routes/likes.rs
@@ -3,6 +3,7 @@ use rocket::response::{Redirect, Flash};
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     likes,
     posts::Post,
     users::User
@@ -12,7 +13,8 @@ use utils;
 
 #[get("/~/<blog>/<slug>/like")]
 fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+    let b = Blog::find_by_fqn(&*conn, blog.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), b.id).unwrap();
 
     if !user.has_liked(&*conn, &post) {
         let like = likes::Like::insert(&*conn, likes::NewLike {
@@ -30,10 +32,10 @@ fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
         broadcast(&*conn, &user, delete_act, user.get_followers(&*conn));
     }
 
-    Redirect::to(format!("/~/{}/{}/", blog, slug))
+    Redirect::to(uri!(super::posts::details: blog = blog, slug = slug))
 }
 
 #[get("/~/<blog>/<slug>/like", rank = 2)]
 fn create_auth(blog: String, slug: String) -> Flash<Redirect>{
-    utils::requires_login("You need to be logged in order to like a post", &format!("/~/{}/{}/like", blog, slug))
+    utils::requires_login("You need to be logged in order to like a post", uri!(create: blog = blog, slug = slug))
 }
diff --git a/src/routes/notifications.rs b/src/routes/notifications.rs
index 6b09614..9548ad7 100644
--- a/src/routes/notifications.rs
+++ b/src/routes/notifications.rs
@@ -16,5 +16,5 @@ fn notifications(conn: DbConn, user: User) -> Template {
 
 #[get("/notifications", rank = 2)]
 fn notifications_auth() -> Flash<Redirect>{
-    utils::requires_login("You need to be logged in order to see your notifications", "/notifications")
+    utils::requires_login("You need to be logged in order to see your notifications", uri!(notifications))
 }
diff --git a/src/routes/posts.rs b/src/routes/posts.rs
index 4fd0266..875db01 100644
--- a/src/routes/posts.rs
+++ b/src/routes/posts.rs
@@ -20,7 +20,7 @@ use safe_string::SafeString;
 #[get("/~/<blog>/<slug>", rank = 4)]
 fn details(blog: String, slug: String, conn: DbConn, user: Option<User>) -> Template {
     may_fail!(Blog::find_by_fqn(&*conn, blog), "Couldn't find this blog", |blog| {
-        may_fail!(Post::find_by_slug(&*conn, slug), "Couldn't find this post", |post| {
+        may_fail!(Post::find_by_slug(&*conn, slug, blog.id), "Couldn't find this post", |post| {
             let comments = Comment::find_by_post(&*conn, post.id);
 
             Template::render("posts/details", json!({
@@ -39,10 +39,10 @@ fn details(blog: String, slug: String, conn: DbConn, user: Option<User>) -> Temp
     })
 }
 
-#[get("/~/<_blog>/<slug>", rank = 3, format = "application/activity+json")]
-fn activity_details(_blog: String, slug: String, conn: DbConn) -> ActivityPub {
-    // FIXME: posts in different blogs may have the same slug
-    let post = Post::find_by_slug(&*conn, slug).unwrap();
+#[get("/~/<blog>/<slug>", rank = 3, format = "application/activity+json")]
+fn activity_details(blog: String, slug: String, conn: DbConn) -> ActivityPub {
+    let blog = Blog::find_by_fqn(&*conn, blog).unwrap();
+    let post = Post::find_by_slug(&*conn, slug, blog.id).unwrap();
 
     let mut act = post.serialize(&*conn);
     act["@context"] = context();
@@ -51,11 +51,12 @@ fn activity_details(_blog: String, slug: String, conn: DbConn) -> ActivityPub {
 
 #[get("/~/<blog>/new", rank = 2)]
 fn new_auth(blog: String) -> Flash<Redirect> {
-    utils::requires_login("You need to be logged in order to write a new post", &format!("/~/{}/new",blog))
+    utils::requires_login("You need to be logged in order to write a new post", uri!(new: blog = blog))
 }
 
-#[get("/~/<_blog>/new", rank = 1)]
-fn new(_blog: String, user: User) -> Template {
+#[get("/~/<blog>/new", rank = 1)]
+#[allow(unused_variables)]
+fn new(blog: String, user: User) -> Template {
     Template::render("posts/new", json!({
         "account": user
     }))
@@ -74,37 +75,41 @@ fn create(blog_name: String, data: Form<NewPostForm>, user: User, conn: DbConn)
     let form = data.get();
     let slug = form.title.to_string().to_kebab_case();
 
-    let content = markdown_to_html(form.content.to_string().as_ref(), &ComrakOptions{
-        smart: true,
-        safe: true,
-        ext_strikethrough: true,
-        ext_tagfilter: true,
-        ext_table: true,
-        ext_autolink: true,
-        ext_tasklist: true,
-        ext_superscript: true,
-        ext_header_ids: Some("title".to_string()),
-        ext_footnotes: true,
-        ..ComrakOptions::default()
-    });
+    if slug == "new" || Post::find_by_slug(&*conn, slug.clone(), blog.id).is_some() {
+        Redirect::to(uri!(new: blog = blog_name))
+    } else {
+        let content = markdown_to_html(form.content.to_string().as_ref(), &ComrakOptions{
+            smart: true,
+            safe: true,
+            ext_strikethrough: true,
+            ext_tagfilter: true,
+            ext_table: true,
+            ext_autolink: true,
+            ext_tasklist: true,
+            ext_superscript: true,
+            ext_header_ids: Some("title".to_string()),
+            ext_footnotes: true,
+            ..ComrakOptions::default()
+        });
 
-    let post = Post::insert(&*conn, NewPost {
-        blog_id: blog.id,
-        slug: slug.to_string(),
-        title: form.title.to_string(),
-        content: SafeString::new(&content),
-        published: true,
-        license: form.license.to_string(),
-        ap_url: "".to_string()
-    });
-    post.update_ap_url(&*conn);
-    PostAuthor::insert(&*conn, NewPostAuthor {
-        post_id: post.id,
-        author_id: user.id
-    });
+        let post = Post::insert(&*conn, NewPost {
+            blog_id: blog.id,
+            slug: slug.to_string(),
+            title: form.title.to_string(),
+            content: SafeString::new(&content),
+            published: true,
+            license: form.license.to_string(),
+            ap_url: "".to_string()
+        });
+        post.update_ap_url(&*conn);
+        PostAuthor::insert(&*conn, NewPostAuthor {
+            post_id: post.id,
+            author_id: user.id
+        });
 
-    let act = post.create_activity(&*conn);
-    broadcast(&*conn, &user, act, user.get_followers(&*conn));
+        let act = post.create_activity(&*conn);
+        broadcast(&*conn, &user, act, user.get_followers(&*conn));
 
-    Redirect::to(format!("/~/{}/{}/", blog_name, slug))
+        Redirect::to(uri!(details: blog = blog_name, slug = slug))
+    }
 }
diff --git a/src/routes/reshares.rs b/src/routes/reshares.rs
index 5365af4..6da07f7 100644
--- a/src/routes/reshares.rs
+++ b/src/routes/reshares.rs
@@ -3,6 +3,7 @@ use rocket::response::{Redirect, Flash};
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     posts::Post,
     reshares::*,
     users::User
@@ -12,7 +13,8 @@ use utils;
 
 #[get("/~/<blog>/<slug>/reshare")]
 fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+    let b = Blog::find_by_fqn(&*conn, blog.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), b.id).unwrap();
 
     if !user.has_reshared(&*conn, &post) {
         let reshare = Reshare::insert(&*conn, NewReshare {
@@ -30,10 +32,10 @@ fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
         broadcast(&*conn, &user, delete_act, user.get_followers(&*conn));
     }
 
-    Redirect::to(format!("/~/{}/{}/", blog, slug))
+    Redirect::to(uri!(super::posts::details: blog = blog, slug = slug))
 }
 
 #[get("/~/<blog>/<slug>/reshare", rank=1)]
 fn create_auth(blog: String, slug: String) -> Flash<Redirect> {
-    utils::requires_login("You need to be logged in order to reshare a post", &format!("/~/{}/{}/reshare",blog, slug))
+    utils::requires_login("You need to be logged in order to reshare a post", uri!(create: blog = blog, slug = slug))
 }
diff --git a/src/routes/user.rs b/src/routes/user.rs
index da0554f..7a77846 100644
--- a/src/routes/user.rs
+++ b/src/routes/user.rs
@@ -27,8 +27,8 @@ use utils;
 #[get("/me")]
 fn me(user: Option<User>) -> Result<Redirect, Flash<Redirect>> {
     match user {
-        Some(user) => Ok(Redirect::to(format!("/@/{}/", user.username))),
-        None => Err(utils::requires_login("", "/me"))
+        Some(user) => Ok(Redirect::to(uri!(details: name = user.username))),
+        None => Err(utils::requires_login("", uri!(me)))
     }
 }
 
@@ -65,7 +65,7 @@ fn dashboard(user: User, conn: DbConn) -> Template {
 
 #[get("/dashboard", rank = 2)]
 fn dashboard_auth() -> Flash<Redirect> {
-    utils::requires_login("You need to be logged in order to access your dashboard", "/dashboard")
+    utils::requires_login("You need to be logged in order to access your dashboard", uri!(dashboard))
 }
 
 #[get("/@/<name>/follow")]
@@ -82,12 +82,12 @@ fn follow(name: String, conn: DbConn, user: User) -> Redirect {
 
     follows::Follow::notify(&*conn, act.clone(), user.clone().into_id());
     broadcast(&*conn, &user, act, vec![target]);
-    Redirect::to(format!("/@/{}/", name))
+    Redirect::to(uri!(details: name = name))
 }
 
 #[get("/@/<name>/follow", rank = 2)]
 fn follow_auth(name: String) -> Flash<Redirect> {
-    utils::requires_login("You need to be logged in order to follow someone", &format!("/@/{}/follow", name))
+    utils::requires_login("You need to be logged in order to follow someone", uri!(follow: name = name))
 }
 
 #[get("/@/<name>/followers", rank = 2)]
@@ -134,7 +134,7 @@ fn edit(name: String, user: User) -> Option<Template> {
 
 #[get("/@/<name>/edit", rank = 2)]
 fn edit_auth(name: String) -> Flash<Redirect> {
-    utils::requires_login("You need to be logged in order to edit your profile", &format!("/@/{}/edit", name))
+    utils::requires_login("You need to be logged in order to edit your profile", uri!(edit: name = name))
 }
 
 #[derive(FromForm)]
@@ -151,7 +151,7 @@ fn update(_name: String, conn: DbConn, user: User, data: Form<UpdateUserForm>) -
         data.get().email.clone().unwrap_or(user.email.clone().unwrap()).to_string(),
         data.get().summary.clone().unwrap_or(user.summary.to_string())
     );
-    Redirect::to("/me")
+    Redirect::to(uri!(me))
 }
 
 #[derive(FromForm)]
@@ -182,7 +182,7 @@ fn create(conn: DbConn, data: Form<NewUserForm>) -> Result<Redirect, String> {
             form.email.to_string(),
             User::hash_pass(form.password.to_string())
         ).update_boxes(&*conn);
-        Ok(Redirect::to(format!("/@/{}/", data.get().username)))
+        Ok(Redirect::to(uri!(super::session::new)))
     } else {
         Err(String::from("Passwords don't match"))
     }
diff --git a/src/utils.rs b/src/utils.rs
index e9463e1..d93b781 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -15,6 +15,6 @@ pub fn make_actor_id(name: String) -> String {
         .collect()
 }
 
-pub fn requires_login(message: &str, url: &str) -> Flash<Redirect> {
-    Flash::new(Redirect::to(Uri::new(format!("/login?m={}", gettext(message.to_string())))), "callback", url)
+pub fn requires_login(message: &str, url: Uri) -> Flash<Redirect> {
+    Flash::new(Redirect::to(Uri::new(format!("/login?m={}", gettext(message.to_string())))), "callback", url.as_str())
 }