Check out Swamble for a fun and innovative social network (sign up for the “private beta”).

Swamble makes it easy to bet on anything: without cash. Online betting is currently illegal in the United States, but as TechCrunch notes in its Swamble review, that could change soon. On the other hand, non-cash betting can force you to get pretty creative—as in one user promising to shave his head if Notre Dame wins seven games this year. Miller beer and “bragging rights” are also very popular.

See also the Swamble’s recently added pro football facebook app.