Is FourSquare About To Blow Up?

\"\"FourSquare.  Is it becoming or ousting one of the Big Three of Social Media?  Maybe.  Maybe not. Currently, it is too small to have them shaking in their boots.

But is it on its way to entering that pantheon of great services?

This is a particularly interesting question given that on Wednesday, Facebook is expected to unveil its initial push into the location space. Earlier, BoomTown cited\"\" sources stating this would be the case. We’ve since heard from multiple sources as well that location will be at least a part of Facebook’s event (which we’ll obviously be at).