It is better to gather reviews from different users for the casinos that are in your site. I have seen some same site and they never gave their own review instead they only base on different user's reviews as their basis in having reviews. I wonder if the user reviews are counted wisely and it can't be abused or send review repeatedly by same user.
The users and the players review matter the most. If you want your site to be popular you should include the option of users giving their reviews about the gambling site. I prefer reading the gambling posts here on this forum only because everyone here is free to give his/her real point of view about the site and it becomes easy to decide which gambling site suits us to play on.