What will be virtual reality's killer app?

The killer app for VR in my opinion, would be synching into a shared virtual space. For Gamers this could mean virtual MMORPGs where you get to step into your favorite realms and interact with not only the environment but other people. Much like in the world of Sword Art Online, a popular anime where people enter this MMORPG using Netgear.

But this shared virtual space can go beyond gaming. It can add another dimension to long distance interactions. like a Skype 2.0.

It can transport you along with hundreds or thousands of other people to events like Concerts, Plays, or even just to Grandma's for weekly family gatherings. Granted this is a long way off, but we're taking steps towards it.