diff --git a/src/lib/server/db.ts b/src/lib/server/db.ts
index 2fe4d42..66d801d 100644
--- a/src/lib/server/db.ts
+++ b/src/lib/server/db.ts
@@ -1,15 +1,23 @@
 import { env } from '$env/dynamic/private';
-import { IGNORE_USERS } from '$env/static/private';
+import { IGNORE_USERS, MASTODON_INSTANCE } from '$env/static/private';
 import type { Account, Post, Tag } from '$lib/mastodon/response';
 import { isTruthy } from '$lib/truthyString';
 import sqlite3 from 'sqlite3';
 const { DEV } = import.meta.env;
 
 const db: sqlite3.Database = new sqlite3.Database('moshingmammut.db');
+// for the local masto instance, the instance name is *not* saved
+// as part of the username or acct, so it needs to be stripped
 const ignoredUsers: string[] =
   IGNORE_USERS === undefined
     ? []
-    : IGNORE_USERS.split(',').map((u) => (u.startsWith('@') ? u.substring(1) : u));
+    : IGNORE_USERS.split(',')
+        .map((u) => (u.startsWith('@') ? u.substring(1) : u))
+        .map((u) =>
+          u.endsWith('@' + MASTODON_INSTANCE)
+            ? u.substring(0, u.length - ('@' + MASTODON_INSTANCE).length)
+            : u
+        );
 let databaseReady = false;
 
 if (DEV && isTruthy(env.VERBOSE)) {
@@ -113,6 +121,55 @@ function getMigrations(): Migration[] {
         FOREIGN KEY (post_id) REFERENCES posts(id),
         FOREIGN KEY (tag_url) REFERENCES tags(url)
       )`
+    },
+    {
+      id: 2,
+      name: 'urls as keys',
+      statement: `
+      CREATE TABLE accounts_new (
+        id TEXT NOT NULL,
+        acct TEXT,
+        username TEXT,
+        display_name TEXT,
+        url TEXT NOT NULL PRIMARY KEY,
+        avatar TEXT
+      );
+      INSERT INTO accounts_new (id, acct, username, display_name, url, avatar)
+         SELECT id, acct, username, display_name, url, avatar
+         FROM accounts;
+      DROP TABLE accounts;
+      ALTER TABLE accounts_new RENAME TO accounts;
+
+      CREATE TABLE posts_new (
+        id TEXT NOT NULL,
+        content TEXT,
+        created_at TEXT,
+        url TEXT NOT NULL PRIMARY KEY,
+        account_id TEXT NOT NULL,
+        FOREIGN KEY (account_id) REFERENCES accounts(url)
+      );
+      INSERT INTO posts_new (id, content, created_at, url, account_id)
+         SELECT p.id, p.content, p.created_at, p.url, accounts.url
+         FROM posts as p
+         JOIN accounts ON accounts.id = p.account_id;
+      DROP TABLE posts;
+      ALTER TABLE posts_new RENAME TO posts;
+
+      CREATE TABLE poststags_new (
+        id integer PRIMARY KEY,
+        post_id TEXT NOT NULL,
+        tag_url TEXT NOT NULL,
+        FOREIGN KEY (post_id) REFERENCES posts(url),
+        FOREIGN KEY (tag_url) REFERENCES tags(url)
+      );
+
+      INSERT INTO poststags_new (id, post_id, tag_url)
+         SELECT pt.id, posts.url, pt.tag_url
+         FROM poststags as pt
+         JOIN posts ON posts.id = pt.post_id;
+      DROP TABLE poststags;
+      ALTER TABLE poststags_new RENAME TO poststags;
+      `
     }
   ];
 }
@@ -263,7 +320,7 @@ export async function getPosts(since: string | null, before: string | null, limi
       accounts.id AS account_id, accounts.acct, accounts.username, accounts.display_name,
       accounts.url AS account_url, accounts.avatar
       FROM posts
-      JOIN accounts ON posts.account_id = accounts.id
+      JOIN accounts ON posts.account_id = accounts.url
       ${filter_query}
       ORDER BY created_at DESC
       LIMIT $limit`;
@@ -284,7 +341,7 @@ export async function getPosts(since: string | null, before: string | null, limi
           FROM poststags
           JOIN tags ON poststags.tag_url = tags.url
           WHERE post_id IN (${postIdsParams});`,
-        rows.map((r: any) => r.id),
+        rows.map((r: any) => r.url),
         (tagErr, tagRows: any[]) => {
           if (tagErr != null) {
             console.error('Error loading post tags', tagErr);