TechCrunch is claiming 8 figures, which would be a bit high for a simple talent acquisition. Seems like a talent+tech acquisition, more along the lines of FriendFeed than Parakey or Pownce.
Edit: Parent formerly read: "...Seems like PR spin. Instead of shutting down a startup and going to work for big.co and risk being called out as a failure, work out a deal with big.co to 'aquire' the startup then shut it down. Maybe we need a new word for a talent acquisition, where the startup is shut down and just acquired as a more optimized way of hiring. ..."