Web's oldest and comfortable question and answer site. Operated by About.com.
Community-driven question and answer site and groups questions.
Log in with your Amazon.com account to ask or answer of questions.
Semantic Q&A search by Answers.com.
www.answers.com & www.submityourbookmarkslist.blogspot.com
Brightstorm Brightstorm Answers
Study help platform for students. Focuses on PSAT, SAT, ACT, and math.
Active community providing online tutoring and answers to academic questions.
Database of how-to articles and videos.
Answers and advice articles for parents.
Wiki-based Q&A service from Answers.com.
Collaborative, wiki-based how-to manuals.
Yahoo Answers Yahoo! Answers
Web's leading community-powered question and answer site.