One of the easiest way to increase your website traffic it so make sure you are listed in the major Search Engines.  Google and Yahoo will probably find your site eventually, but to make sure they know you exist and that you have something someone is searching for, it helps to let them know.

Submit your sites to both Google and Yahoo just to remind them to come visit and index.

Even if your website is already in the search results, it doesn't hurt to add a sitemap to your website and resubmit that sitemap to the search engines.