Want to know where Facebook is growing fastest? InsideFacebook has a great list.
What’s the most important nugget for you? The UK continues to rapidly switch to Facebook. Expect it, like Canada and the US, to become dominated by Facebook users.

When Steve Jobs rolls out a new Apple product, he’ll frequently punctuate his keynote with news of an immediate launch.
Presentation isn’t the only way Jobs and Mark Zuckerberg are different.  
Facebook won’t rush products in the same way.
Take one example- how many people are using Facebook’s new profile? 50 million? 100 million?
Actually, it’s probably closer [...]

Eric Eldon has penned a surprisingly open-minded piece at Venture Beat about Facebook’s profile redesign. The piece is unusual in that it pops through the Silicon Valley bubble and asks one key question: What do users really want to do on social networks?
Eldon aptly draws the conclusion that users want to express themselves just as [...]

Inside Facebook has a typically good rundown of Facebook Application changes.
The overview of new session lengths and formats is helpful. But in the comments, a few questions loom.
First- what is the new canvas width? The fact that questions like these are up in the air shows that while the transition may be smooth, it won’t [...]

As the long awaited transition to the new profile begins, there are a few things developers need to keep an eye on. Facebook lays out the most important tips:

You should start using require_login instead of require_add.
You should start accounting for the changes to user sessions.
If you plan to specify new profile boxes for the main [...]