Related link: http://osdir.com/Article1490.phtml
The Forumzilla project has been around since about May/June of 2004. It is an extention of the Mozilla Thunderbird mail client that allows you to use it as a RSS/XML feedreader.
I’ve takens some screenshots of new version 0.5.2 for you to enjoy.
This version fixes a number of minor, but critical for use, bugs.