Firefox

This Evening, I stumbled across this beauty: Onfolio (found on scobleizer here). And holy hell, it's amazing. Not only does it give you the awesome syndication features of Thunderbird, but the Onfolio Newspaper View is amazing. It has a firefox extension that is very well done (and an IE one, but if you're using an RSS aggregator, you probably aren't browsing in IE6). I'd say that I'll post more when i figure out how to work more of it's features, but i'd just be lying, as i'm pretty lazy.