If your business has a website, (and who doesn’t have one, these days), make it through a professional designer, as attractive as possible, to make people visit it agai9n and again. Use the website to propagate of a promotional products’ giveaway program by which a visitor to your website can get a free promotional product just by signing at the website. Make sure that you have designed the website in such a way that contact addresses and numbers and mail id-s are all filled in. When they sign and register their names on your website, dispatch them a small free promotional product, which need not be expensive. You can think a variety of products – from pens to stickers or key chains, and organize a monthly draw through which you are giving away a better item to selected few, like a tea shirt, or a water bottle, which carry your company logo. These will in turn work as your messengers. At the time of registering announce that they are eligible for freebies in the monthly draws. Go on talking about the giveaways and promotional products that they are going to receive at the end of the month, and to ensure that your credibility is not lost, carry the names of winners regularly.