Like Yahoo Answers, anyone can ask or answer any question. But Mahalo Answers throws in a twist. If someone really wants to encourage the best answers, they can offer a tip in “Mahalo Dollars,” which can be funded through PayPal and are convertible into real dollars once a member has earned at least 40 of them. For those of you who remember Google Answers, it paired questioners with vetted researchers who found answers for a fee. This is slightly different in that questions are not assigned to a specific researcher. As many people can answer it as they want and all compete for the tip. Furthermore, the tip can be rescinded by the questioner if he or she is not satisfied with any of the answers.
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Calacanis talks about why he built it:
http://calacanis.com/2008/12/15/why-we-built-mahalo-answers/
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