Well, look at Facebook and their marketplace and then you know what you can sell on social media. Nearly everything is possible.
Facebook is also using data generated by the users them self, but this i don't think is gonna happen in this project?
No, here you will be able to choose yourself what to do with those data, that's the idea of Sphere and that's perks of decentralization.
I heard that medium started witch hunt on cryptocurrency related accounts, my friends account suspended due to this.
These legacy companies are feeling threatened by rising blockchain competitors and are doing the typical leftist behavioural response to anything they don’t like: bully/block/threaten/censor.
I am feeling sorry for them, they can't stand ahead of a rising technology. also as far as i know a lot of people meeted with medium with cryptocurrencies. maybe that's coincedence but i know a lot of people like this.