diff --git a/src/Mastodon.ts b/src/Mastodon.ts
index cf98713..755725e 100644
--- a/src/Mastodon.ts
+++ b/src/Mastodon.ts
@@ -186,14 +186,14 @@ ${text.split("\n").map(txt => "  > " + txt).join("\n")}`)
         return overview.length + rest.join("\n").length + 1
     }
 
-    private static notMastodon = ["wiki.openstreetmap.org", "hdyc.neis-one.org", "matrix.to","facebook.com"]
+    private static notMastodon = ["wiki.openstreetmap.org", "hdyc.neis-one.org", "matrix.to","facebook.com","github", "tasks.hotosm.org","community.openstreetmap.org","mapillary.com","wikimedia.org","wikipedia.org","wikidata.org"]
     private static isMastodon = ["en.osm.town", ".social", "mstdn", "mastodon", "mapstodon","masto"]
 
     static isProbablyMastodonLink(link: string) {
         if (this.isMastodon.some(white => link.indexOf(white) >= 0)) {
             return true
         }
-        if (!this.notMastodon.some(white => link.indexOf(white) >= 0)) {
+        if (this.notMastodon.some(black => link.indexOf(black) >= 0)) {
             return false
         }
         return true; // probably?