This is pretty much my experience of basing a business on another company in such a way. Besides having learned my lesson about that, it's left me leary of ever

This is pretty much my experience of basing a business on another company in such a way. Besides having learned my lesson about that, it's left me leary of everything from using cloud-style servers to outsourcing features such as comments. You can get a big boost up from leveraging another company's assets, but you're left in a very vulnerable position - at their mercy in several ways. I'm striving to make all future endeavors as independent as possible.