Delicious Library is really impressive (when the scanner works). You wave the bar code of any book, CD or DVD in front of you Mac iSight and a voice reads out the title and adds an image of it to your virtual bookshelf.
Other than the similarity in the look between Delicious Library and Shelfari is that most of the information Delicious Library uses is sourced from Amazon. Reviews, ratings, synopsis… and I think also the images.
When it works Delicious Library imports you whole collection very quickly. This would be great to link to your Amazon account.
There’s another interesting post about the aquistion at profy.com – Amazon Acquires Shelfari and Places It in an Awkward Competition