I have just started to use digg, wow why didn't anyone make me look at it earlier. It'll keep me busy when things get slow on here.
Another site i have been looking at is the google code search. Ok its a google labs tool at the moment, but damn can i find some good code to get ideas from. Ok it has its good side and a bad side, but you will get that with everything. One bad side people have mentioned is the ability for nasty people on the net to find exploits that can be used to break systems. Well I think it just makes it easier for them, but they would find the exploits anyway.