Facebook, google, anything tied to your bank accounts, anything you access with your phone or from your home address, if any of those things you access use your email, anything tied to your email - which ends up being just about everything. Even if I might not know your name, there are probably a dozen big data companies that can tie your name to 99% of your web activity.

Even where there's some anonymity by using a user name, there's rarely anonymity from legal authorities, who can easily access your entire internet and location history - and a VPN won't help you, because those aren't secure.