ffffound it!

I found it sometime ago and it's one of those sites you can keep coming back to find new (cool) stuff (well images).

FFFFOUND! is a web service that not only allows the users to post and share their favorite images found on the web, but also dynamically recommends each user's tastes and interests for an inspirational image-bookmarking experience!!

Membership is still closed to the public (it's still in beta) but you can browse the entire site.

Try it, it's cool, what more do I need to say?