This is just wrong:
188.190.124.66,Ukraine,"<br><center><h1>Pilferer</h1></center><br><center><h2><a href=http://superango.ru/">[Toolly Robot 0.1]</a></h2></center>"
If I didn't pass the user agent through htmlentities() first I'm sure my log file reports would've been real pretty with this thing in it.