Don,

You are experiencing what is commonly known as 'Dingleberry mobile
device Envy'. It is quite contagious and curable only with the
purchase of a Dmd. It's cheaper than a racecar and is just as relevant
to most List discussions. ;-)

Seriously, there are valid reasons why that tag line is there. It
serves as notice that the person is not at a regular computer and
likely have limited capabilities (e.g. searching archives. Etc).
Personally, I find knowing the service provider of the Dmd owner can
save me money. For example, if we are both on Dingleberry Telephone
and Telegraph (DT&T), I know my DT&T mobile-to-mobile wireless plan
allows me to talk to that person until my phone battery is dead at no
additional charges. Then there's that special texting option. The
Blackberries popularized it. Then the iPhone emulated it with Ping.
Dmd followed suit with 'Ding'. To text charges to Ding from Dmd-to-
Dmd. How can you beat that?!

Anyway, the real reason that line is there for the majority f people
is because they don't know how to remove or alter the line. Dmd
manufacturers make it very difficult. One such  manufacturer requires
you to set-up a totally separate online account where you can then
login and go through a comlicated process to opt out or change the
signature line. I don't want to dangle my Dingleberry but buying
Dingleberry and you will find