| Website | Topic on Discuss | Copyrighting of user contributions |
| 3form | Many topics | English |
| Answerbag | ||
| Answers.com | ||
| Ask.com | Many topics | |
| Ask Me Help Desk | ||
| Ask MetaFilter | Many topics | English |
| Askalo | Topics for answer by local residents | English |
| Askville | Many topics | English |
| Avvo | Legal and Medical | English |
| Baidu Knows | Many topics | Chinese |
| BlikBook | Academic | English |
| Blurtit | ||
| ChaCha | Many topics | English |
| Eduflix | Education in India | English |
| Experts-Exchange | ||
| Fixya | Consumer product related problems and solutions | English |
| GirlsAskGuys | Love, sex and relationships | English |
| Google Questions and Answers | Many topics | Russian, Chinese, English, French |
| HealthTap | Health Information from U.S. Licensed Physicians | English |
| Internet Oracle | Humorous answers to almost anything | English |
| JustAnswer | Pay-site focused on medical, legal, automotive, home improvement, veterinary, and tech support | English |
| Knowledge Search | Many topics | Korean |
| LinkedIn Answers | ||
| MadSci Network | Science | English |
| Mail.ru | Many topics | Russian |
| Mahalo | Many topics | English |
| MathOverflow | Graduate-level and research-level mathematics | English |
| ProfNet | Connecting journalists with experts in specific fields | English |
| Quora | Many topics | English |
| Sharecare | Health and wellness | English |
| Stack Exchange Network | English | |
| The AnswerBank | English | |
| The Experts Network | English | |
| The Straight Dope | Many topics | English |
| Uclue | Many topics | English |
| WikiAnswers | ||
| Wikipedia Reference Desk | Many topics | English |
| Yahoo! | Many Topic | English |
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Questions and Answers
Tuesday 16 July 2013
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