History Of Stackoverflow
The website was created by Jeff Atwood and Joel Spolsky in 2008. On 31 July 2008, Jeff Atwood sent out invitations encouraging his subscribers to take part in the private beta of the new website, limiting its use to those willing to test out the new software. On 15 September 2008 it was announced the public beta version was in session and that the general public was now able to use it to seek assistance on programming related issues. The design of the Stack Overflow logo was decided by a voting process.
On 3 May 2010 it was announced that Stack Overflow had raised $6 million in venture capital from a group of investors led by Union Square Ventures.
A 2013 study has found that 77% of users only ask one question, 65% only answer one question, and only 8% of users answer more than 5 questions. As of 2011, 92% of the questions were answered, in a median time of 11 minutes. Since 2013, the Stack Exchange network software automatically deletes questions that meet certain criteria, including having no answers in a certain amount of time.
As of August 2012, 443,000 of the 1.3M registered users had answered at least one question, and of those, approximately 6,000 (0.46% of the total user count) had earned a reputation score greater than 5000. Reputation can be gained fastest by answering questions related to tags with lower expertise density, doing so promptly (in particular being the first one to answer a question), being active during off-peak hours, and contributing to diverse areas.
Stack Overflow is written in ASP.NET 4 using the ASP.NET MVC (Model-View-Controller) framework, and Microsoft SQL Server for the database and the Dapper object-relational mapper used for data access. Unregistered users have access to most of the site's functionality, while users who sign in (for example, by using the OpenID service) can gain access to more functionality, such as establishing a profile and being able to earn reputation to allow functionality like re-tagging questions or voting to close a question.
The Stack Overflow team has recently begun the creation of an API for accessing the data contained on the other sites. Discussion on Stack Apps centers around the API, although users are encouraged to list apps and libraries developed for the API.
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