When it comes to social news, Digg is one of the most preferred engines. Launched in November 2004 as an experiment it has come a long way. Initially, the design was simple and free of any advertisement. However, with its growing popularity Google Adsense was included to it. It received a new interactive interface in the 2005. A new friend list feature was inserted to the page. Be it entertainment, business, lifestyle, politics, world news etc., you can find everything on Digg. You can also subscribe to the social network search engine to stay updated about the latest developments in the networking world.