The truth is, Google is well aware of what is going on and is willing to overlook spamming in order to preserve the quality of search results. A couple of years ago, I remember seeing Microsoft doing cloaking with some of their pages. Now imagine for a second that they are caught and banned. That would mean that the whole domain would be gone and when you search for something like “Windows Vista” it would give you windowsvista.com and getyourvistahere.com instead of Microsoft.com. I would probably do the same thing if I was in their shoes. Yet it looks like the sites of Porsche Denmark and Chevrolet Sweden might be the next on the list.
The bottom line is Google does not care much about what webmasters find fair or unfair. They care about the quality of their results – that’s what their business is based around and their competitiveness depends on it.