Your choice of marketing tactics depends on your target market and on the price point of your services. Depending on your business, if your service has a higher price point you would be better off focussing on lead generation rather than on sales. That involves relationship and credibility building. Try writing white papers. These have been shown to do very well in moving someone from lead to buyer. You also might want to use a white paper distribution service, such as Bitpipe, to help get your expertise out there.