I know this is rather old news by now, but I recently went in and checked by Feedburner stats on who's watching my feeds, and was greeted by:
Needless to say, a little suprising. Turns out Google added reader stats so that apps like Feedburner can figure out how many readers you have at Google. Interesting stuff... kind of interesting at how many people use RSS nowadays. (Note to self: try not to muck up the Good-Tutorials RSS feed any time soon!)