They cannot be serious! Call me crazy but I don't think Oculus is worth $2 billion. There are too many barriers to wide adoption with this stuff and lots of other players in the same space. I guess the developers can retire rich now while Facebook share owners may start thinking where is the value.
What next? Facebook buying Second Life for $4 billion? Meh.
News article here: http://money.cnn.com/2014/03/25/technology/facebook-oculus/index.html
Official blog post here from Oculus: http://www.oculusvr.com/blog/oculus-joins-facebook/