Quora 1

Quora, Inc.

Type Private

Founder Adam D'Angelo

Headquarters Palo Alto,

Area served Worldwide

[1] Employees 26

Slogan |

[2] quora.com

[3] Alexa rank 869

Type of site Knowledge organization

[4] Registration Required to post (, United Kingdom), Invitation only (Worldwide)

Available in English

Launched June 2009

Current status Active

Quora is an online . Users ask and answer questions from other users, and read existing questions and answers. The site was founded in June 2009, launched in private beta in December 2009, and made available to the public on June 21, 2010.[5] Quora aggregates questions and answers to topics and allows users to collaborate on them by editing questions and suggesting edits to other users' answers.[6] Quora's main competitors are social bookmarking sites like , social networking sites like Yahoo Answers, LinkedIn, Answerbag and Answers.com, and expert question-answer communities like the .

History Quora was co-founded by two former employees, Adam D'Angelo and Charlie Cheever. D'Angelo quit his position at Facebook in January 2010 to create Quora[7] and said he was inspired to create Quora because he thought:[8] "that Q & A is one of those areas on the where there are a lot of sites, but no one had come along and built something that was really good yet." Quora's base of users grew quickly in December 2010.[9] In March, 2010 Quora received $11 million in funding from Benchmark Capital, valuing the start-up at $86 million.[10] Quora 2

Website Quora is designed to be an online social form of a knowledge market. Users follow topics that they are interested in and questions and answers in those topics are displayed in the user's news feed. The service allows users to ask questions and give answers. Additionally, users can comment on the questions, and "upvote" or "downvote" answers. An "Answer Summary" can be created to reflect the consensus of the community; this summary is a wiki that can be edited by any registered user. Users can also create stand-alone "Posts", which resemble blog posts.[11]

Technology Quora uses Pylons and Comet for its backend and Ubuntu Linux as its operating system with MySQL as its database. It also uses Git and memcached. Quora uses Nginx as a reverse proxy server and HAProxy for load balancing. Quora has developed its own algorithm for ranking the answers, which works on similar principles to PageRank.[12] Quora uses Amazon Elastic Compute Cloud technology to host the servers that run their website.[13] [14]

References

[1] "How many people work at Quora? Who are they?" (http:/ / www. quora. com/ Quora-Employees-1/ How-many-people-work-at-Quora-Who-are-they). Jun 8, 2011. . Retrieved Jun 8, 2011.

[2] http:/ / www. quora. com/

[3] "Quora Market Research - Alexa" (http:/ / www. alexa. com/ siteinfo/ www. quora. com). Alexa Internet, Inc.. . Retrieved 18 April 2011.

[4] "Do you have to receive an invitation to use Quora?" (http:/ / www. quora. com/ Getting-Started-on-Quora/ Do-you-have-to-receive-an-invitation-to-use-Quora). February 8, 2011. . Retrieved March 20,2011.

[5] Quora’s Highly Praised Q&A Service Launches To The Public (And The Real Test Begins) (http:/ / . com/ 2010/ 06/ 21/

quoras-highly-praised-qa-service-launches-to-the-public-and-the-real-test-begins/ )

[6] Wortham, Jenna (March 12, 2010). "Facebook Helps Social Start-Ups Gain Users" (http:/ / www. nytimes. com/ 2010/ 03/ 13/ technology/

13social. html). New York Times. . Retrieved March 29, 2010.

[7] "Why I Quit My CTO Job At Facebook And Started Quora" (http:/ / www. businessinsider. com/ what-i-learned-from-being-cto-of-facebook-why-i-started-quora-and-this-is-why-gen-y-kicks-ass-at-entrepreneurship-2010-9). Business Insider. . Retrieved March 29, 2010.

[8] "The Mystery Behind Quora" (http:/ / bostinnovation. com/ 2011/ 02/ 01/

the-mystery-behind-quora-digging-in-with-co-founder-adam-d’angelo/ ). Boston Innovation. . Retrieved March 29, 2010.

[9] Lewenstein, ed (November 28, 2010). "Quora Signups Explode" (http:/ / techcrunch. com/ 2011/ 01/ 05/ quora-surge/ ). . Retrieved January 24, 2011.

[10] "Benchmark Invests at $86 Million Valuation" (http:/ / techcrunch. com/ 2010/ 03/ 28/

quora-has-the-magic-benchmark-invests-at-86-million-valuation/ ). TechCrunch. . Retrieved March 29, 2010.

[11] Lewenstein, Joel, ed (November 28, 2010). "What features has Quora recently launched?" (http:/ / www. quora. com/ What-features-has-Quora-recently-launched). . Retrieved January 24, 2011.

[12] "Quora's New Algorithm for Ranking Answers" (http:/ / www. readwriteweb. com/ archives/ quoras_new_algorithm_for_ranking_answers. php). ReadWriteWeb. . Retrieved March 29, 2010.

[13] "Quora Signups" (http:/ / techcrunch. com/ 2011/ 01/ 05/ quora-surge/ ). ReadWriteWeb. . Retrieved March 29, 2010.

[14] Lohr, Steve (April 22, 2011). "Amazon Malfunction Raises Doubts About Cloud Computing" (http:/ / www. nytimes. com/ 2011/ 04/ 23/

technology/ 23cloud. html). . .

External links

• Official website (http:/ / http:/ / www. quora. com)

• Quora (http:/ / www. crunchbase. com/ company/ quora) at CrunchBase Article Sources and Contributors 3 Article Sources and Contributors

Quora Source: http://en.wikipedia.org/w/index.php?oldid=433315842 Contributors: Angelia2041, Bamtelim, Biblbroks, Blueprintcleanser, Buddydavid, Cab88, ChristianLAX, Crysb, Cybercobra, DreamGuy, E Wing, EdGl, EnTerr, Fribbler, Fw3d, Gary King, Gobonobo, Greenrd, Ian Spackman, Jawed, Jplehmann, Ludi317, Mack2, Marcus Qwertyus, Mariuskempe, Martarius, Mhauken, Mortense, Mpcabd, Mrmister107, NCSS, Naddy, Oayfer, OlEnglish, Ottawahitech, Parsecboy, Philg88, Phlegat, Pmsyyz, Publichealthguru, RichardBond, Richi, Robofish, Sarahjanesmithers, Saybrookmc, Sheu, Skomorokh, SlubGlub, Teapotgeorge, ToastIsTasty, Vegaswikian, WASD, WIERDGREENMAN, Wikidemon, Woohookitty, XC Fan, 52 anonymous edits Image Sources, Licenses and Contributors

File:QuoraLogo.gif Source: http://en.wikipedia.org/w/index.php?title=File:QuoraLogo.gif License: Fair Use Contributors: Buddydavid, Sfan00 IMG File:Increase2.svg Source: http://en.wikipedia.org/w/index.php?title=File:Increase2.svg License: unknown Contributors: Sarang License

Creative Commons Attribution-Share Alike 3.0 Unported

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