Topic: dzone - Digg for Developers
I just came across this site called dzone which is basically Digg for developers. It now has a Ruby category, and so I just added a link for Rails Forum:
Digg has it's own programming section, but the RoR content is a little sparse and it is very tough to get stuff on the main page there, so dzone may be a better place to find RoR content.
Feel free to post any interesting stuff to dzone that you do here.