+x : This user mode will hide your mask/ip. GameSurge will take your current host ie. firstname.lastname@example.org and will replace it with email@example.com, where account is your AuthServ account.
To set +x mode to yourself you will first need to have the following:
Be registered with AuthServ. If you need help registering go Here
Be currently authenticated with AuthServ
Once both of these have been completed, simply type /mode yournickname +x to enable host protection or with mIRC do //mode $me +x
What are the advantages that +x have?
When you are in +x mode rest assured your hostmask/ip are not being publicly available to all users on the network. This is excellent in preventing attacks, virus, as well as spam.
+i : This mode will set invisible mode. With this mode enabled, you will appear invisible to user searches (/who), as well as /names.
To set +i to yourself, simply input /mode yournickname +i or in mIRC do //mode $me +i