Lovin it!! Rated 5 out of 5 stars

Works like a charm for me! Using FF 3.03 on Win XP SP3 and Tab Mix Plus version. Thanks to the reviewer below link to the later build. Now I've found a new add-on called Close Duplicate tabs at https://addons.mozilla.org/en-US/firefox/addon/6748 that simply uses a status bar icon to close duplicates since this doesn't add-on provide one. Thank you for such a useful FF add-on extension which provides extra options too, maybe you could update it with a tool bar and status bar icon with options..

This review is for a previous version of the add-on (1.4.0).