Presiam is interesting. They position themselves as an alternative to the leading social media company, Facebook, and many of the features they offer sound attractive. BUT, I'm posting this on the Steemit blockchain right now and Presiam's biggest competitor in the world of crypto-based social media is likely to be Steemit or one of it's Dapps. There's space for more than one provider here but Steemit has had a headstart so it'll take some really impressive features for Presiam to pull ahead. I'll remember the name though (and thanks for sharing it).