My main problem with RSS readers is that if I go away for a few days and come back, I don't really have time to catch up with all the posts which came up whilst I was away. What I needed, therefore, was a stateless reader which would just show the newest 10 entries or so.
Add in category filtering and a web interface - such as it is - and you get Bogroll, which I've just released under the GPL. You can grab the 0.1 release, check out the code from subversion, and have a nosey at my installation.
Incidentally, if anyone can think of a better name for it, do get in touch.