Steem is an interesting case. We have to realize that in terms of data collection, everyone has the ability to mine the blockchain for all our activities and info. At the same time, the data may be less involved, as the blockchain won’t contain things like the sites you came from & exited to, links clicked, articles read, time on a page, etc.

Individual Steem based sites could track in more detail, ala FaceBook, but without our data being proprietarily held hostage, we have freedom to move to other, less intrusive front ends.

The most important thing to me is actually the lack of display algorithms. The purely linear feed of exactly what I follow is the big differentiator. My data is out there, but I’ll choose a site that I don’t feel is using it to manipulate me!