Over the past few months, a number of people have noticed a sharp increase in spam in their .Mac accounts and have wondered why a premium service like .Mac doesn’t include server-side spam filtering.
Scott Murray has decided to do something about it. He has written an AppleScript that automates the reporting of spam to spam@mac.com and spam@uce.gov, the US Federal Trade Commission’s official spam-report mailbox.
Using this script, he hopes, will “let the .Mac team know about all this spam, so they can crank up the juice on their filters.”
Instructions for installing and using the script can be found on Scott’s web page 
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It appears that this script destroyed my address book. At first, I could not believe it, and it is still not clear to me how. But I confirmed by re-syncing with .mac, populating my junk mail folder with new messages, and then re-running the script. Once again, my address book was wiped out.
Whoa, that’s bad! Thanks for making a report of that.
Greg, do you mean that all your contacts in OS X’s Address Book app were deleted? As you can verify for yourself, there’s nothing in the script that acts on contacts (spam-related or otherwise), and it doesn’t even talk to Address Book. I wonder if something else is being activated on your machine each time you run the script.
I would like to thank you for the script and also would like to make a suggestion.
It would appear that the script forwards every message from within the spam folder, even messages that have been corrected as not junk.
I had some messages that Mail incorrectly flagged as junk and moved into the junk folder. I marked every single one of them as not junk, but had not moved them back into the inbox. After more junk that came in, correctly flagged, so I ‘reported spam’ and I saw that the legitimate messages (which I hadn’t moved out of the junk folder yet) were reported as well.
So a check for the junk status would be good thing.