:) Ha ha - great question! u: pr3ttybr0wn is correct - every once in a while, we offer other opportunities to earn Xper. For example, right now you can enter our contest - link - for a chance to win 3000 Xper points. We are also offering a prize of 3000 Xper points to the member who earns the mos "Best Answers" until January 5th. :)
It's like entering contest and things like that. Right now I'm looking at contest advertisement that says "Best Christmas Gift For A Boyfriend Or Girlfriend 2011" I'm sure that contest already ended but it says you could have won up to 3000 Xper Points.