"Last.fm is one of the most well established, fastest growing online community networks out there," said CBS President and CEO Leslie Moonves. "Music has the unique ability to unite large groups of people and engage them around a shared passion. Part of our interactive strategy has been to build communities around all of our properties. CBS Radio has given us a powerful way to create such communities for decades, and it continues to do so. With Last.fm we're adding a next-generation platform to allow audiences to communicate with us and each other as never before."

Moonves repeated the line given by CBS Interactive President Quincy Smith last week that CBS is transitioning "from a content company into an audience company," and said that Last.fm will help the company attract a younger audience.

The acquisition seems to be a slight deviation from the Audience Network strategy that CBS has been pushing. Smith famously told the Wall Street Journal earlier this month that CBS couldn't expect users to come to them and instead had to spread their content around. Purchasing a single distribution point seems dissonant with that sentiment. But this acquisition makes sense, too.

CBS is the owner of one of the largest terrestrial radio groups in the United States with a large number of music stations. Extending their reach online is a good idea. Further, considering how well the MySpace acquisition has turned out for rival media conglomerate News Corp. (Fox), acquiring a fast-growing social network certainly appears smart. And since Last.fm already embraces the idea of spreading their content around (via widgets), they fit well with the new CBS strategy.

CBS has moved beyond simply courting Web 2.0, they're now in the business of buying Web 2.0 as well. DO you think this is a good move for them?