The . Data provided by .
These numbers are 25 million users worldwide, including 10 million in the US.
A few interesting notes from a personal point of view of that stood out:
1) PayPal leading the "IT" category from positions 1 to 5 was surprising, as it's not so much front-and-center anymore as it used to be in terms of publicity. Could be it's solidified it's position as the primary payment site online.
2) Under "Movies": the only non-corporate placement was 'Bernie Mac'. Probably because of him dying and all...
3) "Food and Beverage" dominated by fast food and junk food. Notice the Pepsi site for their Pepsi Stuff? That's proof of a popular program based online for rewards and games and stuff like that that dominates it's primary product category, but not rewards on it's own as you can see below it. But it's no '', you know...a-ring ting toodle-ooo...