If a sailor buys a sailing book by entering Amazon via my website, I get a 5 per cent referral fee. If some-one spends $200 on a Kindle or a camera, [they] get their next three month s subscription for free.
That's definitely abuse of Amazon's affiliate program and crosses the line from click-fraud-ish to full blown criminal fraud. Aside from being against the terms of their scheme, his clear intention is to induce site visitors to make planned purchases through his affiliate links, something that is obviously completely contrary to the spirit of his agreement with Amazon.
The author abused his relationship with Google. He treated his most important customer as a cash cow. He ignores the fact that many of the advertisers footing the bill will be just like him - sole traders and small businesses barely scraping by. By cutting him off, Google is losing revenue to protect the integrity of their advertising marketplace. They're doing the decent thing by their advertisers in taking a cheat out of the system. I wholeheartedly support Google in their actions.