Rated 1 out of 5 stars

In my particular environment (XP) it didn't work. Once installed, my entire Thunderbird slowed to a crawl, taking 15 minutes just to start (on a dual core machine with 2 GB memory). I couldn't find an answer. While looking, I found this announcement by the author back in April that it had known bugs but he neither used it any more, nor was he going to work on it. See http://pieces.openpolitics.com/2008/04/the-state-of-thunderbayes/