It's been forever and a day since Amazon first offered its users access to the first few pages of a book on its web store, but now that feature is being codified under the Kindle umbrella as a new Kindle for the Web service. It'll now allow external sites to embed previews and samples of books right into their content stream, while users get a new Share button for spreading the good word about Chuck Palahniuk's visionary writing across their social networks. Font sizes, line spacing, and even background color are adjustable too. Hit up the source link to try it out for yourself.