It will open your eyes; at least make you think - and take all the online reviews with a pinch of salt. How influenced and flavored are these reviews?
Having worked with many vendors, I will say that most sites do not allow vendors to post reviews directly. However, they may certainly be influenced. Read past the 'blandly positive' reviews as the writer of the blog says, and focus on those that appear original. If possible, find and try to talk to the provider or practice that wrote this review.