http://www.maniacsolutions.com/viral-marketing-wiki/
Is yahoo answers are used for viral marketing scams?
Kagen ionized water as an example. Also various cures for diseases incurable illnesses can be treated only with medication. http://en.wikipedia.org/wiki/Viral_marketing
Yes, good point. I've noticed that too. In fact, here at Yahoo! Product category Y! Someone is trying to sell Nike shoes and again, and if they reported everything he does is to create a new account. That's always the way it is going to be. Opens new opportunities and there are people who try to exploit and abuse it.
[internet viral marketing] From Top Industry producer