User moderation is very useful, as are editors. Filtering NSFW content by tagging it and requiring users opt-in to see it makes sense. There are also copyright

User moderation is very useful, as are editors. Filtering NSFW content by tagging it and requiring users opt-in to see it makes sense. There are also copyright issues that are important. You want to make it easy and fast to identify copied material and yank it, in case of a DMCA takedown notice. You could also let users tip content, and get the data from tipjoy as another ranking tool. Email me ivan@tipjoy.com for more info.