No, we do not allow members to post feedback on other members' profiles on the site.
Currently, we have a Recommendations feature where a user on the website can send a recommendation request to their recommenders/references. If you would like to leave a positive review for someone, please reach out to them and have them send a recommendation request to you through our site.
If there is a member that you are concerned about, you can report the profile to provide your comments to us. We will review the comments, and decide the action we will take, if any.