Its interesting- at first blush I would think that the internet would slow down language evolution by linking together communities in a way that prevents that natural genetic drift of languages between nearby towns with limited intertown travel from happening. Instead, the constraints and form of the medium has created an explosion in linguistic evolution and growth. What an exciting linguistic time to be alive!
Some Instagram celebrity could make up a word, and by the end of the week, 100 million people could start using it. No author from 100 years ago had that kind of reach or influence.