People ought to realize that Twitter, Facebook, were created to provide a product, a service, an experience that was not meant to be a platform. Facebook is a social network. Twitter is a microblog. Everything that they do and create thereafter ultimately must enhance and strengthen their core true selves. This includes what is supposed to be "platforms" for developers to create Facebook, Twitter addons. Facebook/Twitter isn't supposed to be a platform for developing social apps. The platforms that have existed are simply meant to strengthen their core values. So once, such platforms no longer serve their core values, they cease
to exist.