I wouldn't be surprised if they built a social network on top of Ethereum.
From what I know, they intend to build a social network on top of their own technology stack utilizing SpecialK, but plan on using an implementation of Casper for their PoS blockchain to facilitate the "attention economy".
Will this social network be DECENTRALISED? Or will they be harvesting everyones data like facebook does?
If it's the latter they can take their synero and shove it.