Wikipedia
YouPorn is a free pornographic video sharing website and one of the 100 most accessed websites in the world. Since launching in August 2006, it grew to become the most popular pornographic website on the internet, and, in November 2007, it was reported to be the largest free pornographic website as well. As of February 2013, it was the 83rd most popular website overall and the fifth most popular pornographic website. In the category of pornographic websites, it was surpassed in the rankings by competitor sites xHamster, XVideos, and Pornhub, as well as the adult webcam site LiveJasmin.
This Web 2.0 (or Porn 2.0) site differs from many other pornographic websites in that it is completely free and ad-supported. One journalist reported that in May 2007 it generated a monthly ad revenue of $120,000 and that it was owned by Stephen Paul Jones.