Answers.com  Answers.com is an Internet-based knowledge exchange. The Answers.com domain name was purchased by entrepreneurs Bill Gross and Henrik Jones at idealab in 1996. The domain name was acquired by NetShepard and subsequently sold to GuruNet and then AFCV Holdings. The website is now the primary product of the Answers Corporation. It has tens of millions of user-generated questions and answers, and provides a website where registered users can interact with one another. GuruNet was founded in Jerusalem during 1999 to develop technology that intelligently and automatically integrates and retrieves information from disparate sources and delivers the result in a single consolidated view to the user. GuruNet initially displayed its information through a downloadable software product, today known as . The product was launched as a free product in 1999. Beginning in 2003 it was sold to users on a perpetual license base and later as an annual subscription. During October 2004, GuruNet had an IPO on the American Stock Exchange (AMEX) under the symbol "GRU" and also acquired the Answers.com domain name early the same year for $80,000. During January 2005, the company began a new business model of free-to-customer product. Answers.com and software, containing practically all the content that was sold via subscriptions. The new model was based on generating advertising revenue. On August 2, 2005, the company's shares started trading on NASDAQ instead of AMEX under the symbol "ANSW". On October 17, 2005, GuruNet changed its corporate name to Answers Corporation, unifying the company's name and its website, Answers.com. From 2005 to late 2009, the Google search engine definitions feature, in the top-right corner of the site, was linked to Answers.com. On July 2, 2006, Answers.com released a trivia game known as blufr. In November 2006, Answers.com acquired the question and answer site FAQ Farm. Following the acquisition, the product was renamed WikiAnswers. In the fall of 2009, Answers.com launched a revamped version of their website that fully integrated WikiAnswers. At Jeff Pulver's 140 Characters Conference in New York City in April 2010, Answers.com launched its alpha version of a Twitter-answering service nicknamed 'Hoopoe.' When tweeting a question to the site's official Twitter account, @AnswersDotCom, an automatic reply is given with a snippet of the answer and a link to the full answer page on Answers.com.  Aside from providing community-generated Q&A and reference information for published titles, Answers.com began offering videos as part of its VideoAnswers library, in July 2010.