The best free marketing tool has always been word-of-mouth, and today, more and more innovative entrepreneurs are using social media to create new ways to spread the good word about your business. Updience.com is based on the notion that your happy customers are the best channel by which to find new customers—and a recommendation can spread your reach to all corners of the world. Simply choose the location of your customers (local, state by state or worldwide). Then choose your target market, whether consumer or business to business, by age, gender and/or marital status. Updience.com will then advise you on how many potential customers you can reach through their site—for free.