And you wouldn't know this incentive until it was through comments here.
The listicle tried to paint every other company making money as a scourge and the op as the only good guy trying to find the best deal for users when ophas the most corrupt incentives since those incentives are not even documented in a bloody helpdesk article somewhere.
One might take a moment to consider why the best sites run on affiliate revenue and the rest no longer exist or have been bought up by giant corporations.
Give it a rest. I have no idea how HN is allowing you to post these many "responses" to people's criticism of an article you posted without throttling you for spamming. 20% of all the comments on this article right now are yours and you're taking mostly very uncharitable interpretations of peoples' comments.