As I'm sure you know by now, Facebook filed an S-1 with the SEC in anticipation of an initial public offering (see Josh Constine's write-up at TechCrunch).

They included the above image in their SEC filing, but left out what I think is the craziest piece of data:

December 2010 = 327 million daily active users
December 2011 = 483 million (!!!) daily active users

That's a 48% increase in one year.

That's crazy.

Update: @aworldgoesnova pointed out that it's only a 30% increase, and Facebook's S-1 is, well, wrong when it calls it a 48% increase.

Update the second: @aworldgoesnova pointed out that I misquoted the December 2011 number as 425M. I've fixed that, too. So, the original percentage was right, and I've changed it back. Boo to me, but thanks to her! Oh, and numbers and I remain in a lifelong feud.