I strongly believe in the ability of Dapps to bring the blockchain to the mainstream; A decentralized alternative for Twitter should appeal to a lot of people. And if they could use that dapp without having to worry, or even know anything about the blockchain it's running on, it would boost mass adoption like Steemit never could.
Thanks for the update @gray00 :-)
I agree, the increase of user adoption arrives once user accounts are easier to make and eventually when UI interfaces improve like twitter accomplished with it's development over time.