I was at a shoe store recently, and the cashier asked for a phone number and I replied that I didn't want to give them one."We need it for our system" she says, as if that was some sort of convincing argument."Okay, use 613 555 1212," I said."Umm, are you John? I've got 13 people here under that number."She seemed oblivious to the number and its function/history, and why people are offering it.