I agree that it's a new protocol. I also think that because it's a new space and people are always dissatisfied with how they interact with it, coupled with the rather easy development, is pushing the myriad of apps.

I'm developing one, but even though the space is growing more and more crowded I'm not concerned. It's not being done as a primary source of income, but as a side project to help build my development skills as it provides unique problems which I don't face in my day to day web development.