CNET Networks comes with a lot of assets, among them some of the best domains you couldn’t buy without acquiring a company. When the dust settles, CBS (NYSE: CBS) will own Radio.com, now just a way to search for online radio stations but sure to be worked in with CBS Radio; TV.com, which has been revamped but can be much more; News.com, which is now the home of CNET News; and MP3.com, which likely will wind up linked with Last.FM.