Posting Softy Simness Postmortem (my VR diploma project) on Gamasutra was a madness! Look at these rising stats. This giant hill of users is only because of that article.
And this is how it looks like today. Much more moderate numbers (you can see previous Gamasutra peak as a dotted line):
XR: Improved VR Terrain Trees: fixed billboard trees rotating all the time as viewer moves in VR