As referenced throughout this Privacy Policy, the term “Personally Identifiable Information” means any piece of information that potentially can be used to uniquely identify, contact, or locate a single person and that Investors Hub collects from you. Personally Identifiable Information includes, without limitation, the following: user name, password, first name, last name, address, e-mail address, phone number, credit card number, IP addresses, device and client identifiers, submissions to website including support requests, administrative history, public and private posts, and audio or video in which you are depicted or identifiable.

That’s from the hangout website. It doesn’t sound very private. Data is collected on virtually every site on the internet. As for avoiding trolls and fake data, I think you already admitted it’s here.

Use whichever sites you choose for whatever reasons you want, don’t tell Mark he can’t or shouldn’t do the same.