Quora is a place to gain and share knowledge
The Most Trusted Place for Answering Life's Questions
Stack Overflow - Where Developers Learn, Share, & Build Careers
Reference.com - What's Your Question?
Stack Exchange Q&A communities are different
Ask an Expert & Get Answers to Your Questions - ASAP
an interactive Question and Answer community
WiseGeek - Clear, Concise Answers to Your Questions
Choose the best - Slant
Experts Exchange | The Home of Human Intelligence
Q&A for computer enthusiasts and power users
Server Fault is a Q&A community
Post.Bytes - Got Code? Data and Software Development Community
Piazza • Ask. Answer. Explore. Whenever.
Answerbag -- Start a conversation. Have some fun.
Ask Any Question, Girls and Guys Have the Answer
Blurtit: Ask Questions, Get Free Answers
