Hacker News is also not in the business of selling products. A marketplace operator has different duties than a link aggregator - and calling someone names is different than posting evidence.
It would be interesting to see a review site that is also part forum (a la HN or old reddit), and maybe part blog, as well.
The basic idea being that you share a handle between all 3 places, so it's easier to determine the trustworthiness of the reviewer -- both in terms of identifying fake/paid reviews and figuring out whether the reviewer's standards match your own.
