This feature (enabled for paying members only) masks your last action which is displayed next to your name when you are online. It means that if you activate the cloak mode on the Settings page, nobody can see which BrainKing page you are currently viewing.
(hide) If you are waiting for your turn, click on "change" next to the "refresh" on the main page, then set refresh the page to 30 seconds to get your turn to move displayed faster. (Servant) (show all tips)