OK... figured it out.  The difference is the people, like trisha for 
example, that haven't set a name to go with their e-mail address.

Basicly, the mailing list tries to get rid of people's e-mail addresses 
to protect their privacy, but if you haven't set a name, there is no 
information left identifying the sender, so it appears that it just 
defaults to putting the mailing list address in place of the name.

Brian Cluff
Team Snaptek

Regan Smith wrote:
> This is a short copy from the page
> http://listserv.azgeocaching.com/pipermail/az-geocaching/2003-March/thread.h
> tml
> 
> Starting: Sun Mar 2 14:25:01 2003
> Ending: Wed Mar 19 16:58:21 2003
> Messages: 214
> 
> 
> [Az-Geocaching] new face at #1!   Scott Nicol
> [Az-Geocaching] new face at #1!   Brian Cluff
> [Az-Geocaching] new face at #1!   Scott Wood
> [Az-Geocaching] new face at #1!   Loran Wilcox
> [Az-Geocaching] new face at #1!   Regan Smith