here. With 22 categories it really is very complete and I am sure you will meet at least 1 new friend here. No list is complete though, but this one makes a great effort to be.
I found Liferea here, among some other programs that I already use. Google Reader is shutting down on 1 July 2013. I'll have a blog post up soon showing you how to import your Google Reader feeds.
You can even check out some of the different Desktop Environments for Linux, everyone has a favourite - but it still is great to know something about the different options that are available.
They also have a selection of games mentioned, if you have spare time to play games that is ;)