Ok, the interface is quite dry to be fair and could do with a little jazzing up, but the concept behind "Kindle Daily Review" is simply wonderful! Kindle stores a record of all the books you read. It also lets you highlight bits you like (technology's answer to handwritten notes scribbled in the margins of a favourite book!). Now, not only does Daily Review let you look back over the bits that you thought were noteworthy (taking you through one book each day), it also shows you what other readers have highlighted! Take the Steve Jobs biography, for instance:
It gets better. Daily Review uses the powerful memory technique of spaced repetition. In Amazon's words:
These guys! You can't beat them when it comes to mastering data.