Gmatclub has an awesome page for reviews on prep courses. Here is an example
https://gmatclub.com/reviews/veritas-prep-4It is written and explained that the reviews are verified and i trust that. However, i find it strange that :
1) A big majority of the comment are made by "anonymous". What is the big deal to show your username? Why 80% of the people saying positive comment would want to hide their username?
2)
A big majority of the comments with visible username has exactly 0 posts, 0 kudos given/received on Gmatclub

. Is it not strange that someone would create an account on the website only to post a review? even if they would have created it to use the
Gmatclub tests center (free with the courses). Is it not strange that they would have
no other activity on the whole website?
To put it simply ; i found it hard to see reviews of members of the forum with more than 1 or 2 posts/kudos)
If someone has the answer : thank you