Do bald people need shampoo? Good question. When Yuchen Long, 14, posted this question on the beta version of a new site called Wisdom on Monday, she got 63 answers in less than three hours, but no clear consensus: while 77% of respondents said no, 23% clicked yes. All those votes made Long's query one of the most popular on this new breed of social networking site that aims to bring people together based not on their school (as in Facebook), sexy pictures (MySpace) or job (LinkedIn), but rather on their own sense of humor and knack for keeping virtual conversations flowing. Described by TIME Magazine as "your next web obsession", Wisdom is where you share answers to life's questions, large and small. Wisdom is FREE, easy and fun. Have a question? Ask the crowd. Connect with compatible minds. Share your words of Wisdom . Why is Wisdom Wicked Fun? Answer intriguing questions & be part of the Wis.dm of the crowds. The fun of a skill game PLUS the insight of othe