I will not only never track you, but I will actively find ways to know nothing about you, and attempt to store anything I do need in such a way that if it's ever leaked, it's useless to anyone.
Currently, I store your username, a bcrypt hash of your password, and a bcrypt hash of your email. That's right, I don't even know your email address. You can also pay in bitcoin if you really want to keep me in the dark. Finally, I only store the minimum of cookies necessary to make the site work, and never share them anywhere. When you log out, your session is completely clean.