The newly launched Mahalo Answers is just like Yahoo! Answers plus a couple bucks of tip. In short, you get paid for the best answers you contribute.
Google did this before with Google Answers before they closed shop. Yahoo followed thru with a successful re-incarnation in Yahoo! Answers. AOL has Yedda.
What Mahalo intends to do is encourage more participation and better quality content by offering the ability for those who seek answers to give tips to the best response.
It’s not going to be a requirement to give tips but if you want faster and better results for you answers, a tip would easily help do that.
You can use your tip, called Mahalo Dollars, to tip others when posting a question OR you can withdraw them as cold, hard cash while Mahalo keeps 25% of the bounty.
Interesting site, Master Yuga. =D I checked it out, though, and either I missed it or it didn’t have a “how to join” link.