I received this Email from a friend, does it work?
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HOW TO PROTECT YOUR ADDRESS BOOK!

I learned a computer trick today that's really ingenious in its simplicity.
As you may know, when/if a worm virus gets into your computer it heads
straight for your email address book, and sends itself to everyone in there,
thus infecting all your friends and associates.

This trick won't keep the virus from getting into your computer, but it will
stop it from using your address book to spread further, and it will alert
you to the fact that the worm has gotten into your system.

Here's what you do:

First, open your address book and click on "new contact," just as you would
do if you were adding a new friend to your list of email addresses. In the
window where you would type your friend's first name, type in " A".

For the screen name or email address, type "AAAAAAA@AAA.AAA"

Now, here's what you've done and why it works:

The "name" " A" will be placed at the top of your address book as entry#1.
This will be where the worm will start in an effort to send itself to all
your friends. When it tries to send itself to AAAAAAA@AAA.AAA, it will be
undeliverable because of the phony email address you entered. If the first
attempt fails (which it will because of the phony address), the worm goes no
further and your friends will not be infected.

Here's the second great advantage of this method: If an email cannot be
delivered, you will be notified of this in your In Box almost immediately.
Hence, if you ever get an email telling you that an email addressed to
AAAAAAA@AAA.AAA could not be delivered, you know right away that you have
the worm virus in your system. You can then take steps to get rid of it!