It has potential.. Rated 2 out of 5 stars
With the demise of Echofon, this certainly has the potential of becoming the preferred firefox addon, but it does require some development to bring it up to speed.
- conflicts with bookmarks (you can have Twitbin running at the same time as opening your bookmarks)
- automatic updates (removing the need to click on a button to update)
- option to change size of font & avatar
Hopefully if these get sorted out, then it will become very useful. Until such time, it's very hit and miss as to whether you find it useful or damned annoying.