When someone tries to join your server, they see (and the console says): 2012-06-24 20:21:55 [INFO] Disconnecting LegendCookie [/188.8.131.52:52349]: You are not white-listed on this server! When this happens, have a script that automatically adds them to the whitelist. This can be possibly beneficial for two reasons: 1. If they try again, they can play on your server. (It's possible he wasn't going to apply, so this is a plus) 2. If they apply to the whitelist after trying, they immediately get in and think "Wow, that was fast!". Just an idea.