Mention Nigeria to most any internet marketer and stand back and wait for the explosion. They will tell you there are NO legitimate orders from Nigeria, Malaysia Romania and a few other non US compass points.
Suggesting recently that there are more internet scams and spams coming out of the US than all the other "bad countries" put together caught me a lot of heat.
Its good to look at these things from a more rational point of view sometimes. The fact that there is no incentive to target bulk email in any fashion is the main problem. Personally I dont like getting **** in my email. But when they send **** to my eight year old son I'd like to tear their nasty scum sucking bottom feeding limbs from their rotting bodies. Well, you get the point.
Still, I guess it must be profitable, or I wouldnt get so much of it. Thanks for an interesting read.