Play the free games. Do not give them your account numbers. Good online businesses provide easy links to close your accounts/remove your credit card numbers. King.com is vague, at best, about this. Also...having played musical instruments and being fast with typing/clicking, the highest scores seem suspiciously impossible. They have a "Community" section, but it has no real forum where players can discuss things (nice tactic for avoiding public scrutiny). I won't say scambots, but..... Only play free!