Why Is Google Paying Me So Much?

I rarely check my Google Adsense earnings because I don’t use the program much, but I got a bit of a surprise to see some mysterious extra income and thousands of extra page views in the last few days:

It’s odd because none of my stat programs show any significant increase in traffic on the sites I have Adsense on. Adsense generally earns me less than a dollar per day, but all of sudden it’s sometimes been paying me over $12/day!

There’s on average an extra 13,000 page views per day ever since Dec. 3rd, and I have no clue where they’re coming from.

This is kind of the equivalent of free money falling from the sky! I’m a little baffled, but not complaining ;-)