This is a site that allows users to upload large (I mean MASSIVE) files for use as free wallpapers. This results in high quality and even HD wallpapers (for free). So far, I haven't experienced any "pop ups" like you do with Wallpapergate.com. BONUS!
This is a far superior site. Submissions are... monitored, no nudity or partial nudity is allowed, and users receive points/badges for reaching certain milestones. Points can then be used to by "raffle tickets" for various items each month. Finally, a reason to have points.