Reconstructing Zynga: the industry's opinion on fraud in social games

My previous post about fraud in Social Games raised a few objections and spun a few sub-discussions. That's great, because it shows people are interested, and there's a LOT to be discussed in this field. I wanted to circle back to some of the main points that were raised in this discussion.

There's nothing new about fraud. Really. Ever since people walked this planet, I would assume, there has been fraud - more and more as time advances and human kind introduces additional currencies that replace tangible goods. It's beyond the limited availability of tangible goods; being able to control supply and demand through a symbol (call it cash, checks, virtual currency or repackaged subprime mortgages) is the basis for modern economy. But is the fact that fraud isn't new merely a reason for underestimating it? Definitely not; if it were, then why is the Spanish Prisoner scam, better known in its current days' reincarnation as the Nigerian Scam, still rampant on the web?