When sales slump due to a slow economy, a business owner’s first inclination is often to cut the marketing budget. After all, one has fixed costs and cash flow can be irregular. But marketing should be the last activity you eliminate or you risk an even faster downward spiral. Advertising your business and attracting new customers should be an ongoing process, and there are many things you can do that cost absolutely nothing. In these times money might be tight but the need for revenue is continuous, here are just a few suggestions.Become the expertSubmit articles related to your business to the local paper, trade journals and professional organization’s newsletters. Choose a topic that reflects your expertise on the subject and make sure your business is mentioned. You might also find a website that may be interested in letting you host a guest column. Whenever you get published, make copies and send them to all your current and potential customers.Be a great public speakerProfessional meeting planners are always looking for presenters and workshop leaders for conferences. Research contact names in the Directory of Meeting Planners or start with your local Chamber of Commerce or Rotary Club. If, like most people, you dread the thought of public speaking, join your local Toastmasters [http://www.toastmasters.org/] club; this is also a great way to meet potential customers. When you do get the opportunity to make a presentation, be sure to collect business cards for a drawing to win a book or other prize related to your business.