Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
now I know what's this for (ip bans) but isn't it creepy that a person can literally see we're you live and you may never know a mod could send something to your house (yes it's unlikely but still would you like a person to see were YOU live?)
Very few people can see your IP in normal circumstances (only global moderators and administrators), and it's used only to help track down ban evasion and other serious rulebreaking.