There is an interesting post by Om Malik over at GigaOm suggesting how Google can get it mojo back from Facebook.
Taking a slight spin on this, I make the observation that a large part of Facebook's value is your identity and your associations and Facebook's willingness to leverage this information elsewhere on the web (Facebook Connect). Facebook Connect is becoming the most common way to login to other sites. The reputation of your identity is increased by your associations: it requires a consipricy to create a fake Facebook account and have N friends, the presence of which increases your identity's reputation.
Recommended reading is this epic post on Java, Android, Sun, and Oracle vs Google by Charles Nutter. Charles writes about the background of Java, Sun, why Google developed Android the way it did and then looks at the patents that Oracle is using in their suit against Google.
Update: A good post No Java 7, The End Game on the future of Java.