I put it at the bottom of The Perl Review page to play with it (although it will disappear in the next update since its not in source control). No big whoop. I clicked an ad, it was a broken link, but the site said I just earned $0.50.
I forgot about it (and forgot to remove it, making me one of those nasty people who surround three sentences of content with 9,000 ads) until I looked at the site again today. Curious if it had done anything, I checked the ad server site again. Apparently someone's been clicking on it.
Maybe I'll leave it there for a few more days, since a click on that ad gets me the same amount in the bank (after expenses) as selling a single issue. If 16,000 people clicked on the ad, I'd have all the money I need for printing the magazine for the next year (like that would ever happen). It's amazing what people will throw money at, though.