I think it's a great idea. I think redditcoin failed because of copyright issues. Myself I had the idea for "hoinz" but never really pursued it, although I'd like to.

"Embracing the new spirit of cryptocurrency. Obtain hoinz from your reputations and contributions on various websites. Because you owe it to yourself."

http://www.reddit.com/r/hoinz (nothing there)

Things like moderation tasks can be paid in hoinz.