Selanit writes "Lots of socially-oriented sites provide suggestions for things you might like based on user-provided data. But how many can claim to offer you things you'll probably hate? LibraryThing, the social book-cataloging site, has used its database of personal libraries to create UnSuggester, which does exactly that. You type in a book you like, "It analyzes the seven million books LibraryThing members have recorded as owned or read, and comes back with books least likely to share a library with the book you suggest." For example, apparently readers of Edward Said's "Orientalism" rarely purchase "Ella Enchanted" by Gail Carson Levine. Who'd have thought? Quirky though it may be, the tool seems an interesting way to broaden your horizons. If you're a hidebound, crufty old fogey, I un-recommend it!"