Disqus (pronounced discuss) is a worldwide blog comment hosting service for web sites and online communities that uses a networked platform. The companys platform includes various features, such as social integration, social networking, user profiles, spam and moderation tools, analytics, email notifications, and mobile commenting. It was founded in 2007 by Daniel Ha and Jason Yan as a Y Combinator startup. In 2011, Disqus ranked #1 in Quantcasts U.S. networks with 144 million monthly unique U.S. visits. Disqus has been featured on many major publications, such as CNN, The Daily Telegraph, and IGN, and about 750,000 blogs and web sites. Disqus was first developed in the summer of 2007 as a Y Combinator startup headed by Daniel Ha and Jason Yan, who were undergraduates at the University of California, Davis. Disqus was first incorporated and launched on October 30, 2007.