New question and answer sites seem to be popping up.  The New York Times ran an article, 'The Answers Are Out There, and The New Q. and A. Dig Them Up'  .


One of  the new sites is Quora (find and follow your friends' questions and answers).  You can have Quora check your email address book for friends using Quora.  I received an email stating a friend was following my Quora activity.  I haven't posted a question yet.  I'll have to post something to see how this works.