I've been vigilant with the spammers too - and zapped one this afternoon (While Jif was having his beauty rest).
The ICQ number is usually a good clue - also their linked site usually has something to do with viagra or some other revolting thing - sometimes there is a run of them from a particular country - there were a lot of German ones a while ago for instance.
Pity we can't jump down the line to properly deal (eviscerate) with some of the repeat offenders.
