First of its kind plugin on internet to buy. It introduces the necessity of registration only for players using non-premium accounts, when server is in offline mode. Premium users do not have to worry about their account while non-premium are permitted to play with them. Do You want to have minecraft server, and You want to have many players on it? Not them all have minecraft premium accounts, and that's the problem... Do You think it's good idea, to allow them to play, but You worry about security? With this plugin it's no problem! You do not have to worry about really nothing more than updates! Go ahead and check it out!