Answer
1. How do I rate a review?
When you finish reading a review, you will find a panel at the bottom of the page, asking you to rate how useful the review has been for you. Choose the option that best reflects what you think.
2. How do I post a comment on any review?
This option is available only to members. Go to the bottom of the review and enter your comments in the "Comment Box". You can put as many comments as you want on the same review.