Acquisition rumors have lately been hit or miss: some were totally off (like the Microsoft - Yahoo deal) while some turned out to be correct (like the Google buys Feedburner one).

Well, here’s a new one for you to chew on: CBS acquires Last.FM for $280 million. This deal, if it goes through, doesn’t surprise. Last.FM is a great service, has 15 million users, and has recently announced a video counterpart to its site, as well as signed contracts with several big content providers.

On our scale of corporate evilness, this one scores quite bad. Media powerhouses like CBS are as evil (greedy) as they come, and we wouldn’t like to see Last.FM turned into some vessel for promoting CBS content. Thread lightly, CBS; this is Web 2.0, and users don’t like to be manhandled.

If this turns out to be wrong, blame Mashable.

*update: if LA Times seems like a credible enough source to you, consider it confirmed.