> "The "Yahoo boys" are ridiculous though because they are fairly easy to spot and are only marginally literate. It is part of a foreign condescending attitude to assume that that level of poor presentation is an acceptable standard for an educated Nigerian. Most of us think people who are scammed are suckers but it's an evolutionary game and some of the scammers are really efficient predators."

My understanding is that the poor grammar in classic 419 spam emails is at least sometimes intentional. Only stupid uninformed people will fall for something that has all the traditional hallmarks of a scam (spelling errors, ALL CAPS, poor grammar), and those are the only people that the scammers want to invest time in.