wow! great hack! but wouldnt it be better to write that logins to a logfile? if there ever was a meaning in the word "logfile", then might be this?
i got some x-thousand users, some have mod-/useraccounts. dont want to explode by pm-box...

and (if thats not already in there) its very important to see the real username. otherwise it isnt much confortable to find out, if theres a troll in between...