Steemit is going to be huge in my opinion. If this type of blockchain technology really takes off, which I assume it will, there will be copy cat blockchains that work in the same ways, but will come later on. This may mean that Steemit will be the first, sort of how bitcoin is the first of it's kind and all other cryptocurrencies use the Bitcoin name to promote their own systems. All future site-blockchain systems will compare themselves to steemit to promote their own systems, which will benefit the steemit system as a whole and promote it's authority in the space.