That's all well and good for unsolicited email, but for those of us who have lists of people who have signed up to receive email from us, this sort of thing is

That's all well and good for unsolicited email, but for those of us who have lists of people who have signed up to receive email from us, this sort of thing is terribly relevant. And if you're selling things online and aren't creating these lists, you're leaving a bunch of money on the table.