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Citation bot (talk | contribs) Added date. | Use this bot. Report bugs. | Suggested by Abductive | Category:Question-and-answer websites | #UCB_Category 13/41 |
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}}</ref> It was created to be a more open alternative to earlier question and answer websites such as [[Experts-Exchange]]. Stack Overflow was sold to [[Prosus]], a Netherlands-based consumer internet conglomerate, on 2 June 2021 for $1.8 billion.<ref>{{cite news|last=Dummett|first=Ben|date=2 June 2021|title=Stack Overflow Sold to Tech Giant Prosus for $1.8 Billion|publisher=Wall Street Journal|url=https://www.wsj.com/articles/software-developer-community-stack-overflow-sold-to-tech-giant-prosus-for-1-8-billion-11622648400|access-date=2 June 2021|archive-date=29 October 2021|archive-url=https://web.archive.org/web/20211029175938/https://www.wsj.com/articles/software-developer-community-stack-overflow-sold-to-tech-giant-prosus-for-1-8-billion-11622648400|url-status=live}}</ref>
The website serves as a platform for users to ask and answer questions, and, through membership and active participation, to vote questions and answers up or down similar to [[Reddit]] and edit questions and answers in a fashion similar to a [[wiki]].<ref name="fashion">{{cite web | url = http://www.codinghorror.com/blog/2011/10/the-gamification.html | work = Coding Horror Blog | author = Jeff Atwood | date = 2008-09-21 | title = The Gamification | access-date = 2011-01-24 | archive-date = 1 February 2014 | archive-url = https://web.archive.org/web/20140201063225/http://www.codinghorror.com/blog/2011/10/the-gamification.html | url-status = live }}</ref> Users of Stack Overflow can earn [[Reputation system|reputation points]] and "badges"; for example, a person is awarded 10 reputation points for receiving an "up" vote on a question or an answer to a question,<ref>{{Cite web|url=https://stackoverflow.blog/2019/11/13/were-rewarding-the-question-askers/|title=Were Rewarding the Question Askers|date=13 November 2019 |access-date=20 November 2019|archive-date=16 November 2019|archive-url=https://web.archive.org/web/20191116115224/https://stackoverflow.blog/2019/11/13/were-rewarding-the-question-askers/|url-status=live}}</ref> and can receive badges for their valued contributions,<ref name="soFAQ">{{cite web | url = https://stackoverflow.com/help/whats-reputation | work = Stack Overflow | title = What is reputation? How do I earn (and lose) it? | access-date = 14 August 2010 | archive-date = 9 June 2013 | archive-url = https://web.archive.org/web/20130609062938/http://stackoverflow.com/help/whats-reputation | url-status = live }}</ref> which represents a [[gamification]] of the traditional Q&A website. Users unlock new privileges with an increase in reputation like the ability to vote, comment, and even edit other people's posts.<ref>{{Cite web|url=https://stackoverflow.com/help/privileges|title=List of privileges|access-date=22 November 2017|archive-date=14 February 2020|archive-url=https://web.archive.org/web/20200214143308/https://stackoverflow.com/help/privileges|url-status=live}}</ref>
{{As of|2022|03}} Stack Overflow has over 20 million registered users,<ref>{{Cite web|title=All Sites – Stack Exchange|url=https://stackexchange.com/sites?view=list#users|access-date=2023-03-26|website=stackexchange.com|archive-date=22 November 2019|archive-url=https://web.archive.org/web/20191122230648/https://stackexchange.com/sites?view=list#users|url-status=live}}</ref> and has received over 24 million questions and 35 million answers.<ref>{{Cite web|title=All Sites – Stack Exchange|url=https://stackexchange.com/sites?view=list#questions|access-date=2023-03-26|website=stackexchange.com|archive-date=22 November 2019|archive-url=https://web.archive.org/web/20191122230648/https://stackexchange.com/sites?view=list#questions|url-status=live}}</ref> The site and similar programming question and answer sites have globally mostly replaced programming books for day-to-day programming reference in the 2000s, and today are an important part of [[computer programming]].<ref>{{Cite web |title=Stack Overflow Developer Survey 2021 |url=https://insights.stackoverflow.com/survey/2021/ |access-date=2022-07-22 |website=Stack Overflow |language=en |archive-date=16 September 2021 |archive-url=https://web.archive.org/web/20210916193418/https://insights.stackoverflow.com/survey/2021/?utm_source=social-share |url-status=live }}</ref> Based on the type of [[tag (metadata)|tags]] assigned to questions, the top eight most discussed topics on the site are: [[JavaScript]], [[Java (programming language)|Java]], [[C Sharp (programming language)|C#]], [[PHP]], [[Android (operating system)|Android]], [[Python (programming language)|Python]], [[jQuery]], and [[HTML]].<ref name="tags">{{cite web | work = Stack Overflow | title = Tags | url = https://stackoverflow.com/tags | access-date = 9 December 2014 | archive-date = 15 February 2020 | archive-url = https://web.archive.org/web/20200215125549/https://stackoverflow.com/tags | url-status = live }}</ref>
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