I guess, but I think it's unlikely. This person would've have to also extract the postal addresses from these people - considering some of the weird people who hang out at Amiga forums these days, I'd call that a serious piece of social engineering.
If it was a prank, it would have to be done by someone who personally knew all the recipients well enough to also know their street addresses. I met quite a few people at amiwest who I consider decent and friendly, but I don't know them well enough yet to give any of them my street address.
