Seeing how long it takes to read a book with a paper clip and an extension

I'm left both pleasantly surprised - it's a neat solution, and disappointed - I was hoping for a more extensive treatment of a question like:

'How can a web interface impart more of the experience of browsing for an hefting or flipping through a book.'

I love browsing book stores, it's part relaxing, physical experience and part practical information gathering. There's a lot you get in a relative instant by flipping through a printed book that online product pages and samples do a terrible job of.