I never liked the affiliate functionality on review sites because it creates a perverse incentive. Here is a review of the thing and here is a link which will make us revenue if you buy it. No, of course we haven't talked up the thing so you click the link. Trust us.
I also don't trust review sites that run direct campaigns vs review-type content pages that feature that advertiser. I see a glowing review of Colonial Marines and I see Sega units on the page. Quick inspect shows non-programmatic ad service. Thanks for your honest review, I'm sure you didn't care what the advertiser who specifically bought ad units on that page thinks of your writing.
Please make sure to understand my above comments do not reflect my experience on PT nor are directed at it. This is a more general vent on the state of the review "industry" as it is.