Anyhow…
There are 3 big affiliate programs which “sponsor” these tactics, and Dom mentioned them. My website disappeared from Yahoo because of being scraped to the bone, however, Google and MSN do not allow these websites to craw too high in the results, so I could care less.
If you guys scrape them – all you will do is re-reproduce your own content, in other words, you will create more and more of those scraper sites, which will even drop you lower.
The only one who could put an end to it is the affiliate program itself, but I would not count on it, as the money is way to big.