How To Sites- (building designs, website tutorials)
Music Lessons- (video, guide, chords, etc)
Graphics- (Photos, images, icons, designs, patterns)
Games- (Flash, Online Games - beneficial if you use a timer to have the content locker jump mid game)
Templates - (Word-press, Joomla, HTML,)
Programming- (HTML,PHP,Scripts,)
Game Cheats- (PS3,Xbox,PC game cheats)
Ebooks-(How to, instructional, etc.)
Alternative Check out- (Complete an offer to checkout)
Doc. Files to PDF Files - (Have users complete an offer in order to have there files converted)
YouTube to MP3- (allow users turn a YouTube video in MP3)
Membership upgrades - (Allow users to complete offer to upgrade a forum membership)
Quality Content- (Content lock blogs, quotes, etc.)
Musicians- (Instead of charging $ for your music, have users complete an offer)
Android/Apple Apps- Monetize your apps, with content locking to an upgrade, or allowing users to complete an offer to gain more in game chips/tokens)