I think it will exist alongside Facebook and Twitter and basically kill all the other blogging and thread based networks. On this subject, I just made a parody video of a man comparing Steemit to Facebook and Twitter (Risitas, if you know the hilarious video). Let me know what you think: https://steemit.com/funny/@oliverb/funny-man-compares-steemit-com-to-facebook-and-twitter-risitas-parody