Shalom!
I have no idea about what many of the books in my library are, who the person behind it is or how good the book is.
When I do some research on the resource, it would be nice to have a little text window on the information pane, perhaps next to the "Add tag" text box, in the library tool. There one could jot down some brief notes about it. Then, on a later occsion when I have forgotten all that I learned about that book I can simply look at my note in the information pane 
Isn't that a good idea or what? 