This is why I always use a fictitious first name, like my pet's name, or intentionally misspell my last name, making it just unique enough that I'll know exactly who it was that sold me out to other marketers. In my case, it was a woodworking trade show, a vendor put an item I wanted on backorder… and other items started arriving to Mr Ginger Wxxxxxx. Well, just maybe my cat ordered them, but not likely.