"Held: Google’s copying of the Java SE API, which included only those lines of code that were needed to allow programmers to put their accrued talents to work in a new and transformative program, was a fair use of that material as a matter of law. Pp. 11–36."

play around with Google's API's using OAuth. see how the request/responses interactions should take place.

Google API for in-browser DHTML visualizations