I wasn't aware that blogs where being acquired- by traditional media companies but according to Mashable that seems to be the case. They posted today that New York Times has acquired its first blog with its acquisition of the Freakonomics Blog. For the authors of Freakonmics it is full circle as the original chapters of the book actually appeared in the New York Times magazine.
I visit the the Freakonomics blog often and it always as a lot of comments- a very engaged audience so defiantly a good acquisition for the New York Times as they continue to provide new value to their users.
Update Aug 9th- According to paidcontent NYT did not acquire the Freakonomics blog but formed an alliance.