[Koha] Are Member Reviews useful

We will be using koha for Internet access to specialised teaching resources /reference works. Most of our members are teachers having shared interests. Because few of us get time to read everything, members would like the ability to submit / read reviews for catalogue items. It seemed that this would be fairly easy to incorporate as an additional koha feature but I am unsure of the value. Does anyone have any experience with this type of service.. and do you think it has any real value? R.