Does a numeric mailbox identifier have any advantages over a mnemonic identifier?

There are one or two advantages of a numeric id

1. They can be entered on a Telephone keypad (or a touch screen, or a
custom pad built from cheap parts) rather than on a keyboard

2. security - they are harder for onlookers to guess or memorize- for
example 3146457 is much harder to guess a missing digit, than say
DRNORTON or REDHOUSE.

that's probably all (since you only asked for the advantages, i assume
you are already aware of the DISadvantages)

if you need anything else, just ask.

(and here i thought i was boycotting $2 questions.)

I think this will do - thanks!

I would suggest that a numeric-only identifier has the disadvantage it
is more easily mistyped and (possibly confidential) mail goes to the
wrong recipient.

Owain

Hi jumbie,

Although numbers are my business,
if you're talking about e-mail addresses,
I find alpha addresses much easier to remember.

Since the numeric ones mean nothing to me, 
I disregard them and have to look them up
each time I write to someone with a numeric
address. 

Uh, same thing with nonsense letters.
And with oddly spelled words. 

Just my take on the issue.

Your TaxMama-ga