I own pictir, a high-resolution image hosting site. It's been climbing in popularity since I started it in July, and for the month of November already has almost 50,000 unique visitors. This is potential money that I'm losing. Unfortunately Google banned my AdSense account for the site, because people have been uploading pornographic images regularly. I could ban that action, but that's almost half my traffic. Instead, I'm looking for some decent alternatives. Any ideas?