My best guess would be that one of the many people crawling the internet
for e-mail address' got ahold of your address from pages like:
http://listserv.azgeocaching.com/pipermail/az-geocaching/2002-June.txt

We go out of our way to protect your e-mail address in every way that we
can (ie. it doesn't show up when you search for mail on
AzGeocaching.com), but there are a couple of places that it shows up
that lets the no good types get ahold of it.
Incidentally, we got more spam directed at the list today that ever
before.  I deleted it of course, it does make me believe that someone
just crawled the heck out of our server.

Brian Cluff
Team Snaptek

On Tue, 2002-09-03 at 17:15, Team Tierra Buena wrote:
> Earlier today our team email address received its first-ever Unsolicited
> Commercial Email, often known as "spam". Unfortunately, this means only
> that it will be the first of many. It is probable that I will be
> changing the email address in the near future.
>  
> In the meantime, since we pretty much use that email address only here
> and geocaching.com, I'd like to try and figure out which rock these
> slugs crawled out from. Did anyone else receive an email today with an
> offer to make $20,000 using PayPal? If so, please reply to the Team
> Tierra Buena at Earthlink dot net address while you still can.
>  
> Thanks,
>  
> Steve
> Team Tierra Buena