Ahem, so I signed up for the free version and after registering one book it is pretty clear that there are more interesting things to me than the number of pages in the books I own. Hmm, I will need to give this thing a second thought. Organize, collect, share your books with Singlefile Another fascinating feature of this database is the association with Amazon. Any click in the database gives the user a cookie, which provides 5-10% of the generated sales on amazon to the makers of the database. (Wait a second, I thought this was a pay service already). I am an amazon associate too, which means that any click on any of the book links on the site will give me the chance to collect 5-10% of the purchase my visitors make after reading my little reviews and recommendations. (Up to $10 per purchase, so if you buy a minilux I will get $10) To be quite honest, I have made $0 this way and I will probably make another big $0 in the future. What this whole program provides me with however is some additional tracking for clicks. Amazon is really good about it. I know that about 35 people clicked on the picture of the minilux in my links section, for example. I see it as a fun fact. But then this is me. I get excited about somebody finding my site because they entered "painting of big clown comforting little clown". Frightning, isn¹t it? But also really funny.