Do you also, by chance, have a short Gmail address? I've also definitely gotten signups from other individuals mistyping their address on my six letter account.

My comedy ownership of someone else's identity is a Staples account. Presumably someone in New York with a similar name had a store person look up their Staples account, which was actually my Staples account, and associate their business name with it. Their business name now appears on mailings I get from Staples and sometimes I get sample pens and the like branded with their business name.