Jay Conrad Levinson coined the term guerrilla marketing, which I define as low-cost, creative and typically self-implemented public relations techniques.Here are a few thoughts that might spawn some ideas for your own business.* When you can't get in to see a prospect, try clipping half a $20 bill in a note to her. You get 20 minutes of her time and she gets the rest of the $20 when the meeting is over.* Prior to a trade show, visit the town's largest taxi company, and tell them to alert drivers.