Much has been made recently of FaceBooks new feature where members can ask a question and get other members to answer it. Equally well publicized is Quora, a high powered question-answer site, with talented and accomplished Silicon Valley types (VCs, angels, tech execs) providing answers to questions. Now Harvard Business Review is entering the fray with the Answer Exchange. In the HBR version the Editors of HBR will provide answers to questions.
What is sad is that LinkedIn had a big headstart in this space but their walled community approach has so far prevented them from dominating this attractive market segment (here).