Without wishing to be negative - well alright then I will - member or reader site 'reviews' are carried out by people who love a particular site - most of which are club sites and are well documented enough anyway!
Add in the financial incentive plus the ego trip of getting your name in print plus a negative review is unlikley to be published and what you have in my humble view is a pointless exercise in viewing through excessively rose coloured spectacles!
But I guess it is a cost effective (cheap) way to fill a page of MMM and I suppose someone must read them all?
I must admit to looking at the MMM site 'reviews in some depth depending on where they are, but what is helpful is that they now generally show nearest public transport.
The CC Continetal Guide is pretty useful, but I do think you that you have to look at the review/entry date, as they can be several years old (esepcially if you are not using the latest edition of the gudie!),and campsites change ( for better or worse) over the years.For our purposes, I tend to look at the 'distance from......information and sometimes they are miles (kilometres) from the town they are listed under. They are also obviously very subjective, and what is one man's meat os another poison, as with everything in life!!