Generally, if a potential customer wants to find your business website on the internet, there are two methods available to them. First, they can use a search engine like Google to type in your business name or some other keywords associated with you and your business, and see if your website comes up in the search results. The second method is to use a directory. A directory is a website that simply catalogs and lists other websites and businesses. Directories catagorize listings by location and type of business so that users can find what they're looking for easily. Users can also search within a directory.
Every business and website needs to make sure that they are listed in search engines and directories. It doesn't matter how great a website design you have, if customers cannot find your site, you will not earn revenue.