Sudar I believe furl is much much better than delicious. but I know delicious is more popular, dunno why. More sites: http://www.snopes.com http://rotten.com http://www.textfiles.com/directory.html
Please don't focus on tech sites only. Look at the wider aspect.
BTW I'm looking for some good free porn sites/forums, please pm me, it will be better if it's indian but any will do. Don't post porn site here or sushubh will delete.