I would actually disagree. I found it a waste of my money. I paid the full fee and maybe only 1/5 of the providers I looked up had any comments on them. Perhaps it helps with avoiding the notoriously bad providers, but I rarely get any info on there in the first place.
I also see people who make reports and leave good comments on there- that seems like it could actually hurt the provider they are trying to help. Someone sees "5 anonymous reports" on a number and may assume the provider is terrible, when those "5 anonymous reports" were actually compliments.
In my opinion, it was a waste of money for me, and unless you have the extra money to spend, I wouldn't go for it.