Just read on 901am today that Facebook has acquired Friendfeed. The details of the transaction haven't been given or how much the acquisition is for. The synergies for Facebook are very good and it help attract a few more users (not that they don't have many!
Technorati acquired Blogcritics.org some time back. I signed up with Blogcritics.
DivShare, the free file hosting site did come with a bang. It did expand quickly due to its easy integration with WordPress as well as Facebook. However, four days back, in a post at DNForum, DivShare has been put up for sale.
TechCrunch reports that Google has acquired Feedburner for $100 million dollars. This is indeed a great achievement for Feedburner. For us publishers, I see a lot of good things in store...