My info page briefly addresses this issue with the site (or maybe human nature) in general, but my feeling is that one must take a review for what it's really worth (little or nothing) and remember your true motivations for involvement. Over time a course's 'true number' will certainly emerge...
Just to put things into perspective for the spoiled new generation of players, I remember a time when just hearing of a new course was cause for genuine elation, despite the probable 3.5 to 4 hour drive to play it. The only source of information about all the courses available was a small pamphlet, less than 100 pages, put out by the PDGA (if I remember correctly). Directions in the book were often of the type provided by a 'stereotypical' inarticulate local and were certainly not cross-referenced with GPS coordinates, or accompanied by pictures, course maps, hole distances and the like. What ever happened to the spirit of adventure? Is 'certain' people's time really that valuable? Viewed in perspective, any individual who leaves a churlish review need be the subject of laughter and more importantly, pity. Only a tiny shriveled soul fails to find anything genuinely positive about a disc golf outing - psychological infirmities aside.
In certain ways, things are looking up! But isn't it strange how fiercely we remember a single instance of mild criticism, most likely vindictive, instead of the steady stream of compliments and affirmations?