It occurred to me too that I am getting charged for admining my own app, but it really is the only way to do it. It's how Google works - by the impression. I'm assuming that Nabble is taking a small markup on the cost per impression. I could do the math and figure it out, as I work with Google Adsense professionally, but in reality Nabble is so cheap that I'm not going to spend the effort to figure it out.
I'm curious to know how many Nabble apps have 1,000,000 page views per year.
HTTPS Please!