An article ghostwriter can write content for you when you simply don't have the time; not everyone finds your website through the search engines. It's hard to rank a website for all of the keywords that are targeted to your business, and many people find your site through other means, such as articles and blog posts that may come up in searches for some of those more obscure search terms someone may use.
Some of the most well-known marketers on the web have tens of thousands of articles floating around in "cyber space", which is where a huge portion of their traffic comes from! If your're depending on your website alone to attract traffic so that you can make money, you're missing the boat. Lots of content is what makes the internet go 'round, so hire an article ghostwriter to keep that traffic flowing to your website!