> Facebook chat in two years: put on a headset and get teleported to a room in a virtual world where you can talk to your friends' avatars. Skype and Google+ Hangouts suddenly seem very 20th century.

This doesn't happen in two years at all -- it's hard to keep track, but Google Glass has been in its public beta release for over a year and yet there are no people walking around using them, at least where I'm from.

Plus I think most of us are still using the keyboard (be it virtual or physical) to tap instant messages and email -- if VR would be so mature in two years that we'd be able to do a lot of things through a virtual world, why haven't we ditched keyboards straight away?

There is likely a user input revolution around the corner, but I'd be looking at the 2024 date or later. This is probably a good reason why to be concerned about the purchase -- Facebook seems unlikely to care about Oculus games beyond what Oculus promised in their Kickstarter.