Well, one platform has a slightly hard to type URL, and the other has https://medium.com/@presidentobama - I think the winner is fairly plain to see.
That said, the fact that the US president has fewer than three thousand followers suggests Medium is quite a few orders of magnitude behind Twitter, Facebook, etc in terms of popularity, suggesting to me either a writing platform is never going to have the same sort of mass appeal or that there's still space for a big winner in that sector.
That said, the fact that the US president has fewer than three thousand followers suggests Medium is quite a few orders of magnitude behind Twitter, Facebook, etc in terms of popularity, suggesting to me either a writing platform is never going to have the same sort of mass appeal or that there's still space for a big winner in that sector.