A Wired News article called my attention to ZairMail. With their service you can send a letter to someone (or multiple people) for no charge. They’ve taken spam back to snail-mail! ZairMail inserts targeted advertisements in the envelope along with your message. They promise to keep your addresses private, so they claim not to be collecting them to sell or use for further junk mail. I wonder how many people will use this service to send their own advertisements out for free (those “make money fast” ads spring to mind)? You can also, if you wish, pay them to send your mail without ads (but direct mail services aren’t a new concept).