Check out O'Reilly Answers

The website currently in beta describes itself as a community site for sharing knowledge, asking questions, and providing answers that brings together our customers, authors, editors, conference speakers, and Foo (Friends of O'Reilly).

To me, O'Reilly Answers looks like a cross between Stack Overflow & LinkedIn Answers. The nice thing about it is that you can get to interact with O'Reilly authors & earn points for participating that can be redeemed for books, training, courses, and conferences.

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