They actually make up the smallest part of all the spam.
and the bigg part is ?
Most likely sales for ** SPAM ** and **SPAM** and other drugs.
my first mail account ever that i got with my W98 gets the 20 a day pill spam (you know what..they are blue with a V or C ) and some others
my hotmail/yahoo/gmail are 99% spam free.... it is less then one a week