B2B Game mechanics and onSite social

Get flash to fully experience Pearltrees

Social marketing platform - Refer a friend programs, and Facebook tools - Extole

Game Mechanics & Gamification for Websites, Blogs, and Mobile Apps

Gamify your online experience with the BigDoor Gamification API

Resources Archive | BigDoor Media

Reward contributors, build loyalty. | Bazaarvoice

Gamification - When Your Customers Participate, Your Business Wins! - Bunchball

"By adding deep social functionality to the fast-growing gamification industry, Badgeville transcends multiple technologies that will only continue to grow in significance and that are the heart of the modern web experience."