I haven't made too much progress on this privacy policy thing, but here's the deal, short and sweet:
I won't be selling or giving or showing any of your data to anyone, really that's the last thing I want to do.
This service won't be free in the future, it's just that it's a pain to integrate payment into a service so I'm not doing it yet. There is no "it's free so you're the product" here, it's just a matter of time until I come out with some free and premium packages.
In the meantime, enjoy Volto!