If you want to find sites in general, download stumbleupon:
StumbleUpon » Welcome to StumbleUpon
They've got tons of websites, lots of adult content too (you select interests, then you can use the toolbar to keep showing sites recommended by other people). You rate them with thumbs up or down, and in doing so improve the quality of your stumbles.
God, I sound like such an ad it's not even funny.