CBS Interactive recently acquired Last.fm, a UK-based Internet radio and music community site that serves as a social music platform with more than 15 million active users, for $280 million.
Web 2.0 music outlets, such as Last.fm, Pandora.com, and Slacker.com, which allow users to create customized radio stations and playlists based on their song preferences, along with Internet radio stations, are all geared to challenge terrestrial music radio.
Some sites, like Last.fm, also feature few or no marketing interludes. If the ...