Practical Web Programming with the friendfeed API & Google App Engine

Practical Web Programming with the friendfeed API & Google App Engine: "The GAE is definitely worth learning, if Google is going to continue to support it. It’s basically free scalable hosting for your project (with some limitations) and you only pay for bandwidth plus storage needs over the free threshold (~5million pageviews a month). It was rolled out last year with Python support. Just recently they released java support, which enabled Quercus/PHP to work. Incidentally Quercus is much faster than normal php, but I do have an issue (hopefully something I can fix on my end)."