Well, I got a Bicycling Magazine two months ago, and thought nothing of it. Sometimes they do that as promotion. However, I got one again last and this month like clockwork. I seems I'm getting them like a subsrciption now. I asked my wife if she subsrcibed, and she didn't. We don't know why, but it keeps showing up. Not that I mind, it's not the greatest magazine, but it has few good articles, and of course lots of ads for gear and bikes, etc.
The only reason I can think of, is perhaps one of my purchases for gear somehow triggered a retailer to add it on as a subscription (some do that).
Or, maybe I have a secret admirer.