The urls will never run out, when 4 digit urls are used up, there will be 5,6,7 digits and so on.. just like any other url shortening services. So your lfnc url would not be "recycled". If there is some "Stupid_Bob thing", I will review it manually and carefully upon complain and block it only if it is really necessary. Since there is no account/login stuff in this site. No one could get any personal info from you while posting.