How often do customers hear from you? Probably not often enough. Most businesses focus their marketing on prospects rather than customers, so it’s a safe bet that your own customers might be hearing from your competitors more often than they hear from you. A drip marketing campaign is one way to cost-effectively keep in touch with customers. One Illinois real estate agent used the occasion of rising postage for just such an effort. Since postage went up by a penny, she bought 5,000 one-cent stamps, and sent each of her customers twenty of them along with a friendly note and no hard-sell. Minimal cost, and a very memorable touch. If you’re not reaching out to your customers or clients regularly, just remember that someone else will. (Thanks, Mike!)