Wiki Wiki

Wiki(comes from the Hawaiian phrase"wiki wiki") is a quick-to-build, easy-to-edit website that allows all the users to add, remove or edit information easily. It can be used as an online community board to give ideas, suggestions and comments, and those informations are easy to be edited and deleted. So it seems Wiki is not a safe way to share your ideas with your friends online if you don't want these information to be seen by the public.

But anyway Wiki can a good library tool,the customers can use it to share their reading suggestions.
I found the St. Joseph County Public Library System is a user friendly pathfinder. Here is the link
http://www.libraryforlife.org/subjectguides/index.php/Main_Page