Blogs never went away. It's just that all the vast majority of the new web users, a number that completely overwhelmed the existing population, went straight into the walled gardens of megacorps. They still haven't become aware of the web at large (partly because web search sucks now). But their perceptions don't effect that the fact blog users and readers still exist.
I think the real title of this article should be, "Introduce Personal Blogging to Smartphone Users".
I think the real title of this article should be, "Introduce Personal Blogging to Smartphone Users".