It's happened before; there was a HN post on it. Sorry can't remember the details off-hand.
That's fairly solid evidence, but it only counts for anything if the person checking on your case bothers to look at it. For a minor affiliate to be terminated, I'd expect virtually no investigation.
My conclusion: it's nice revenue while you can get it, but that probably won't be very long. Make money with their program and they're coming for you.
eBay and Amazon are particularly notorious for draconian "enforcement" and sudden changes in terms and/or payouts.
Also, be aware that coupon and rebate sites generate the overwhelming majority of commissions across networks. While programs claim to want content, that's not where the real money or priority lies.
Don't like it? Don't do affiliate marketing. Because there is nothing you can do about it.
http://www.consumerreports.org/cro/shopping/the-arbitration-...
I know of two other people who also took them to small claims and won as well. (both in states with five figure small claims limits)
It's a pretty weird treatment, but I think that companies just don't give a shit when it comes to fraud prevention and don't allow any wiggle room.
Each time, they pointed me to a part of the agreement that says you need to have "original content" that isn't primarily just ads. In each case, I know the content was original (I created it: mostly articles about DIY electronics, 3D printing, etc), there were no other ads on the sites other than a few (2 or 3 per page) affiliate links where I mentioned products that I had incorporated into my own DIY projects.
I wasn't able to get any further explanation from Amazon in these cases, so I don't even know why they kept shutting down my accounts - and I guess that's what concerns me the most. Even if they hadn't shut me down when they did, the fact remains that they could, at any point in time, shut down or significantly alter the terms of our "agreement" at their (seemingly arbitrary) will.