One way to boost your site ranking, therefore exposing your business well to potential clients and customers amidst competition, is to do web directory submissions, which I suppose, means the good directories or refutable ones with links. The best way of course is the content. Web directory submission really help, and though there are companies that charged for the same services with added ‘features’, we can get good ones for free. If I can remove a link as easy as I can submit it in, it wont hurt to expand your exposure through as many directories or your niche.