I got junk mail from Neilson Ratings, and as usual with junk mail, I open it to send them back an empty envelope. Not sure if the PO gets more money or not, really don't care. And to my surprise there were two 1 dollar bills. It said if you filled out the survey they would send you another $5.

I wonder how many of these are opened vs going straight to the garbage?

No, I didn't fill out the survey.