|Unlock Forum posting with Annual Membership.|
I had that once ... the same guy ordered 2 books but the house numbers were different. I PM'd first to find out where they should really be mailed.
I think this happens when someone chooses to mail to an alternate address, and then they have to type it in, apparently some people can't type the same thing twice. Or they are not careful.
Best guess ... none of the 3 addresses is his "home", and he typed the 2 that are similar a little bit differently, but likely those are going to the same person. The third is probably for someone else.