It looks like a lot of your links shown on this page are directory listings or sites offering to do link swaps. I would say these links have very little value and may in fact negatively impact your site. As Danrawk pointed out the key is linking to relevant content and high in quality.
Stick to building relevant content that is valuable to your customers to earn links from other influential people and sites in your industry rather than participating in quick link swaps or adding your business to a low ranked directory.
