Honestly the author is over thinking his solution to the problem. The way to solve this problem is to give people the option of viewing reviews that Yelp believes are of dubious origin. Add another section to the reviews page, and let the users decide how to process the extra information but frame it as possibly being untrustworthy with an explanation of why it was tagged as untrustworthy.
They already allow you to click through to the reviews they have filtered out. How about having two average ratings, one for only "filtered in" reviews and one for all reviews?
And the font is about 10px and 30%K buried in the bottom corner. I can understand that would be desirable if the algorithm was more accurate in filtering bogus reviews, but that's clearly not the case so it just seems unscrupulous.
