Let me get this straight: Yelp uses exact SAME model as all the newspaper's advertising departments, and magazines, the same model as the "Yellow Pages" of old, the same as Google -- even "Angies list" etc, and yet it is Yelp that is uniquely a problem?
This documentary is not about the real issues of concern, such as larger privacy issues arising out of the net. this film is simply a symptom of pearl clutching in the culture of outrage and offense at nothing. The haters of Yelp are not small business. Small businesses are enable by Yelp. the haters of yelp are big business who want to control what is said about them.
EG The producer of this documentary seems to support illegal "disparagement clauses." For example if you hire a major national plumbing company their standard service agreement probably has fine print "disparagement clause" saying you cant write a review disparaging their work for you even if you are truthful in doing so. Yelp, the ACLU, the Electronic Freedom foundation and every major consumer advocacy organization have have successful fought those "disparagement clauses" yet this film sides with big business that want to muzzle consumers that have been ripped off.
If you go to the trailers section of IMDB to look for a specific trailer, there is in the background, half the screen a PAID advert for a competing film. Modern viewers know what that is -- only easily outrages do not.
Let's put this in perspective. Do you think a supermarket ought to be forbidden from putting point of sale, higher profit, items at the cash register?
As far as review shilling, running a fakespot (google it) analysis of the reviews of this film on amzon show 19% of the positive are likely fake -- meaning close to one in five positive reviews on amazon for this film itself are likely shills. Yelp has lower estimated proportion of shill/astotrfing and is therefore more truthful and accurate than than google reviews, amazon -- or even angies list!