Except we can't trust any of the ratings on Amazon, so what are you going to metafilter on?
Interesting. What reviews do you personally find to be the most trustworthy?
TheWireCutter.com is reasonably reliable and are up-front about their use of affiliate links.
At least some of the mainstream consumer periodicals are reasonably reliable, like PC World and MacWorld.
You could do a MetaFilter-like combination of those review sites.
But Amazon.com is notoriously unreliable for reviews. As is most any other e-commerce platform or shopping site with integrated reviews.