Do you get much junk mail? Pre-approved credit card offers? Most consumers don't know you can opt out of a lot of that stuff. Observe: For junk mail, go to the Direct Marketing Association site or write: DMA Mail Preference Service PO Box 643 Carmel, NY 10512 For pre-approved offers of credit and insurance, you can opt out online or by callng 1-888-5OPTOUT (567-8688) If this is any indication, we ran an anti-mail fraud project last year called Senior Sting 2006. During the month of May, 300 senior citizens from across Missouri kept all their junk mail. It amounted to 8,000 pieces.