With the economy in a low-flow toilet, it’s a little scary to realize advertising is the new housing. Everything seems to be premised on ad dollars anymore, but if there’s no money, who is going to buy what they’re selling? And what does this have to do with the price of food? Things have gotten so bad that twice in two days I spotted huge ads on the tops of pizza boxes — for H&R Block at Freddie & Pepper’s during an emergency refueling and for Tekserve on a delivery on its way up in our elevator. A real Madison Avenue genius would be coming up with apple ads, and not for the computer stuff but to be emblazoned on the fruit soon to be sold on every corner. . . .