Just a suggestion. Scattered throughout this great site are many books that have been recommended by members. Would it be worthwhile to have a forum section for books - perhaps to contain a members review/thoughts or possibly swap/sell or recommend or rubbish. Might enhance sales through our bookshop as well.
Book on the diamond industry http://books.simonandschuster.com/Precious-Objects/Alicia-Oltuski/9781416545125
Up top is a link to the Bookshop I know this does not have all the reviews but if you look at the sub forum partner website there is a heap of reviews in there. Hope that helps.