My friend @sandro (who also was the W3C staff member on the Social Working Group as it turns out) has put together a chart about "ways to harm people online" (whether you agree all are harms, most are, and all are claimed as such) that I think is really useful: https://docs.google.com/document/d/1ZQDWwh3J6c_RAVlIAPAKI6eRB4HI7HlrBwAJrP8btkQ/edit
What's interesting is that most of these are about harm caused by *distributing* information.
I have a lot of thoughts about which of these are preventable and how that I'd like to write up. Briefly, if we engineer our systems differently, I think column 1 can be mostly mitigated. It gets harder as we move to the right, and the upper right might be impossible to completely prevent in a decentralized system (but even there, some cooperative work can be done, but not as much)
@cwebber @firstname.lastname@example.org lots of activity on that document :)