Google has announced several very interesting updates to its Book Search tools, including an embeddable viewer for book previews and a data API. These should open-up a wide range of book-related applications. This follows-up on Google's release in March when they launched the first API for Google Book Search, the Book Viewability API.
Our API directory now includes 45 transit APIs. The newest is the Metro Transit NexTrip API. The most popular, in terms of mashups, is the Yahoo Traffic API. We list 20 Yahoo Traffic mashups. Below you'll find some more stats from the directory, including the entire list of transit APIs.