After hearing about Harbor Freight in this newsgroup, I authorized them to email me their catalog and sales literature.
As it turned out I wasn't really interested in the quality of mechandize that they were selling, but their email advertisements continued to arrive at the rate of 2 or 3 each week.
This went on for about 3 months. Last week I sent them an email reply with the words REMOVE as the subject. Believe it or not, they immediately took me off their mailing list.
A firm with ethics like this deserves special reconition! While I can't get into the products that they sell, I really have to respect their business ethics, and now feel almost obligated to buy something from them, not because I want the product, buy just to show them my respect.