Seems like that would just give you all those made-for-seo sites that tend to have second-rate content at best. ie, you search for 'best electric lawn mower', and you'll get bestelectriclawnmowers.com, 10bestelectricmowers.com, etc. Those sort of sites exist for every imaginable topic, and in my experience are rarely worth visiting.

I would almost want the opposite. The best content on most topics I've found tends to be a page on a discussion forum of some sort, followed by blogs and more general editorial sites.