Spam is profitable ...

I did some brief research regarding the profitability of spam and found various and inconclusive results. However, it is apparent from the articles that I read that spam is a profitable business, albeit a low margin business. Viagra seems to be the leading product, but fake watches also provide spammers (or their clients) with some revenue. Not surprisingly, the products most likely to be bought are "impulse buy" products. What I found surprising is that spam is a striving industry tied to the global economy. There are several books written on the subject likely adding to the GDP of this country. Workers from India, China, Bangladesh and other developing countries have been outsourced to tackle captchas. And, as noted in class, most spamming business are operating out of countries in Africa.

I am sure, with some deeper digging, someone could find reliable numbers regarding the profitability. If so, please post some info.