OK, despite my horrible experience, I really love Shelfari. So I can sing its praises let me first clear my conscience by reminding you of what happened:
If you don’t have time to read that, here is the short version:
DO NOT UPLOAD YOUR ADDRESS BOOK TO SHELFARI
Facebook allows you to interact with books and I’m sure that other sites do as well. But Shelfari works far better than the others to my mind. You build a shelf using Amazon.com and a search engine and then you can tag them and/or review them. You can find other people who like the same books as you and then find what else they have read and liked.
I realize this is more a straight Web 2.0 site than anything like a “widget,” but it is my blog and I can do what I want.
Here is a sight that uses the Shelfari blog widget. I’m too cheap to use it because I want to get kickbacks from Amazon.com. For those who care, however, here is my bookshelf. I just wish I had some way to add my Dad’s blogging novel.