Bellingcat are an investigative agency which uses open data and decentralised members (I think), but not doing it for members to see themselves:

https://en.wikipedia.org/wiki/Bellingcat

https://www.goodreads.com/book/show/54680228-we-are-bellingc...

Sure.

If you have the wherewithal to protect yourself from the unsavory underworld types who will inevitably come after you for revealing things they'd just as soon keep secret.

There's a reason you only see the government doing this kind of thing.

Yea sure. I mean that's already a thing to some extent, but, if you want the honest answer. Everything you do digitally is known about you. Your physical location, places you regularly go to and when, Websites you visit, your account names, etc. Even ISPs can sell your data these days.

I'm aware of this; I think many ordinary people and lawmakers are perhaps less clear on it, and that making it easy to see would help people understand the situation.