| Answer Matrix |  | http://www.answermatrix.com/ | AnswerMatrix is an online knowledge exchange community of everyday
people that love sharing information. | Everybody | General topics and discussion | Yes Point and military rank | No Coming soon | No | Yes | No | Yes up or down | Yes Summary in tooltip | No | No | No | No | Yes Sergeant and above can modify | No | No | No | No | No | No | Yes Asked, views, latest activity | Yes | No | No Not yet | No | | Answer matrix system | 0 Likes | 2011-09-28 17:29:55 |
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| Quora |  | https://www.quora.com/ | Quora is a question and answer site focused on getting really high
quality, authoritative content on any topic that people are
interested in. | "Elite": Tech pundits, entrepreneurs, early adopters, bloggers,
marketers, social media mavens. | General topics and discussion | No | Yes | No | Yes Topic assignments | Yes | Yes | Yes Answers summary | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes viewed, latest activity, followers | No | No | No | No | Terms: do not modify the Content, put a link to Quora website to
use content, keep update content with the latest version on quora. | Facebook, Twitter | 2 Likes | 2021-04-12 20:05:48 |
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| StackOverflow |  | http://stackoverflow.com/ | This is a collaboratively edited question and answer site for
professional and enthusiast programmers. It's 100% free, no
registration required. There are other sites for other topics, such
as Photography, DIY, Cooking, Gaming etc.. See
http://stackexchange.com for a full list of the current sites. | Developers, programmers, experts and enthusiasts. Other site have
experts and enthusiasts in their domain. | Technical programming issues. Issues relevant to the domain for the
other sites in the network. | Yes scores, badges | Yes | No | Yes | Yes up or down | Yes up or down | Yes Summary appears at tooltip | Yes Via RSS feeds on each question | Yes via RSS feeds on tags | No People aren't the focus of the sites, the questions and answers are. | No | Yes Anybody can suggest edits (subject to approval). Users with 2K+ rep can make edits straight away. | Yes Anybody can suggest edits (subject to approval). Users with 2K+ rep can make edits straight away. | Yes Tick the box at the bottom of your question. | No | Yes A single draft of a question or answer is saved | Yes Edits can be rolled back to any previous version by anyone with edit rights. | Yes | Yes asked, viewed, latest activity | Yes Voted on by the rest of the community | No | Yes Reduced for users with more than 200 rep | Yes http://stackexchange.com/ | Open data: CC-by-SA license (free to Remix, to reuse with
attribution link) | Google, Yahoo, Myopenid, Facebook, AOL, Blogger, LiveJournal,
Wordpress, Verisign, Openid, ClaimID, ClickPass, Google Profile,
Stackoverflow account. | 2 Likes | 2011-03-06 17:53:36 |
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| TED conversations |  | http://www.ted.com/conversations | A social media platform that connects people for conversation,
collaboration and debate. The platform gives people access to
engage notable TED speakers, and the broader TED community, in
conversations that -- for the first time on a social network --
have a time limit. | TED speakers and community (engaged, intellectually curious
members) | General topics and discussion but mainly focused on all important
problems to solve around the world... | Yes TEDCred scores, TEDCred medals, and badges | No | Yes Related TED Talks | Yes | Yes vote for great conversation | Yes | Yes Discussion summary | No | No | No | No | No | No | No | No | No | No | No | No | Yes | Yes Whether it's one day or one month, TED Conversations are assigned an expiration date to keep the discussion sharp and on-topic | Yes | No | Creative Commons 3.0 (Attribution-NonCommercial-NoDerivatives)
license: attribute the conversation; noncommercial use only; and no
derivative works. | TED account | 0 Likes | 2011-02-21 23:47:20 |
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| Yahoo Answers |  | http://answers.yahoo.com/ | Yahoo! Answers is a place where people ask and answer questions on
any topic. Why not share your facts, opinions and personal
experiences with the Yahoo! Answers community? | Everybody | General topics and discussion | Yes points, levels, statistics | Yes | No | No | Yes mark question as interesting | Yes up | No | Yes private watchlist | No | No | No | No | No | No | No | No | No | No | Yes not really.. only number of personal questions and answers | No | No | Yes | No | Yahoo copyright | Yahoo, Facebook, Google | 0 Likes | 2011-02-21 23:47:20 |
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| Quextit |  | http://frc.quextit.com | Quextit provides Q&A Engines. This site is an example where the
FIRST Robotics Competition is using it to manage their Technical
Question and Answer. The Game Q&A is hosted by FIRST themselves
at https://frc-qa.usfirst.org/Questions.php. | Anyone can use Quextit but this Q&A site is for FIRST Robotics
Competition competitors. | Robotics | No | Yes | Yes | No | Yes | No | Yes | Yes | No | Yes | Yes | Yes | No | Yes | No | No | Yes | Yes | Yes | No | No | No | Yes | | | 0 Likes | 2013-01-23 18:28:50 |
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2011-02-21 13:59:50
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