The 'Causes' app on Facebook has raised $10m in two years

"Today, Causes broke $10,000,000 raised through the application in just over two years. Half of this, $5,000,000, was donated in just the past 6 months. It is through the hard work of activists and nonprofits on Causes that we have been able to reach this milestone. We are constantly awestruck by the drive, commitment and passion poured into a cause, petition or birthday wish. In an effort to share what $10,000,000 raised means, we thought we’d show how that breaks down and how you have all contributed to this success.
Here’s how it all breaks down:
$10,000,000 donated
$5,000,000 donated so far in 2009
$25 median donation
192,000 unique donors
26,000 causes have received donations
$1.4 million raised through Birthday Wish feature"
Source: Joe Green on the CausesExchange blog, 10th July 2009