Market Share for the Top 5 Questions-Answers Websites

The Q&A market have all along been dominated by Yahoo Answers though WikiAnswers have seemed to snatched a heavy chunk of market share over the past year from Yahoo. The top 5 sites with their market shares in the past year:

1. Yahoo Answers – 74.05%
2. WikiAnswers – 18.35%
3. AnswerBag – 4.51%
4. Ask Metafilter – 1.80%
5. Askville – 0.85%