If you create a topic from http://wordpress.org/extend/plugins/dashboard-recent-posts-extended it creates the tag dashboard-recent-posts-extended
http://wordpress.org/tags/dashboard-recent-posts-extended
But you can't add that tag to an existing forum topic. It will truncate it to dashboard-recent-posts-extende so here's the link for that tag:
http://wordpress.org/tags/dashboard-recent-posts-extende
