Have you tried http://www.metafilter.com/ http://www.metafilter.com/? It has lots of interesting new links posted every day on just about any topic, and the qua

Have you tried http://www.metafilter.com/ http://www.metafilter.com/? It has lots of interesting new links posted every day on just about any topic, and the quality of the comments is quite high. New users have to pay for an account ($5) in order to comment, and that tends to keep people well-behaved.