has anyone heard of,or tried this?

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" or "new
person" just as you would do if you were adding a new friend to your list of email addresses.
Second:
In the window where you would type your friend's FIRST name, type in:
!000
(that's an exclamation mark followed by 3 zeros).
In the window below where it prompts you to enter the new
email address, type in: WormAlert.
Third:
Then complete everything by clicking add, enter, OK, etc.
Now, here's what you've done and why it works: the "name"
!000 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.
But when it tries to send itself to !000, it will be undeliverable
because of the dummy email address you entered (WormAlert). If the first attempt fails (which it will because of the dummy 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 WormAlert 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.
Pretty slick huh?
If everybody you know does this, then you needn't ever worry about opening mail from friends.

let me know what you think.