selective mail forwarding

wanted to see if you guys can think of a better way to do this.  i'm new 
to this, and wrote the script to:

1. forwarded any mails formatted with 'send to address(_at_)wherever' in the 
subject.  that is if the address is a valid e-mail address.

2. only forward addresses from aol users (it's embaressing to be one, they 
deserve a mail forwarding service!)

3. junk the mail after forwarding.  is it right that after you forward a 
mail it still romps through your other recipes?  i had to add the dev/null 
just to get rid of it.

any suggestions?

:0
* ^Subject: +send +to +\/[^ ]+
{
        :0
        * $MATCH ?? [A-Z0-9a-z]+(_at_)(_dot_)+\(_dot_)(net|com|edu|be)
        {
                :0fb
                * ^From: (_dot_)+(_at_)aol\(_dot_)com
                | mail $MATCH -s"forwarded mail"
        }

        :0a
        /dev/null
}

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