Stumbleupon : No unattributed photos vow

I will not vote up or add any site that consists of a grouping of unattributed photos - no matter how cute or funny or pretty. Using someone else's work to promote yourself is wrong. Even worse, if your pages of stolen work contains ads, and stumbleupon (or digg, or reddit) are driving traffic there, they are enabling profit from that theft.

Photographs on the internet are not all yours to use for free. If you don't know the attribution - don't post it, and don't rate it.