CBS has agreed to purchase CNET Networks for $1.8 Billion, making it one of the 10 most popular internet companies in the world with over 54 million unique visitors per month. CNET; a leading provider of entertainment, news and information sites; currently controls a number of popular destinations including CNET.com, ZDNet.com, BNET.com, GameSpot.com, GameFAQs.com, TV.com, mp3.com, [...]