keeping your address book empty of contacts can prevent spamming too...
(However, if your "address" is in someone'else's address book it can be taken over for SPAM (example I have for that is SPAM emails from and address from and internet provider which was changed over 3 years before the SPAM started, the people had moved to a place where that internet provider could not provide service, had physically left the country moving over 5000 miles away...)
Arianwen ferch Arthur
"Outside of a dog a book is man's best friend. And inside of a dog it's too dark to read." G. Marx
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