How bout if someone wants a link or formatting in their sig, they put it in their with the appropriate code so that if we were allowed to use it it would show up, then when a mod/admin see's it they can either disapprove of it in which case they leave it alone, or they approve and edit the sig themselves, that way it couldn't get out of control, liek everyone is saying even though I don't think it would anyway. Also, put somethign in their like "Pending Approval" then if it is approved you will know because instead of code it would be what you actually wanted, or if its disapproved the mod/admin could put Disapproved
hope thats clear when you read it, seems like it will be confusing