This is one of the reasons you'll want to use a password manager. Right now you likely have more than a few places where you're using the same password. Problem is, when one of these sites gets hacked - and eventually they all get hacked - your single password is now getting that hacker into all of your accounts. To prevent this, you're going to want to create new passwords for every site. Sure, web forums or commenting accounts can have a reusable password, but make sure the matching email has a sufficiently strong password.