since a large variety of businesses requires photograpy in some form it is important for photographers to market themselves in the right way and to send out the right portfolios to the businesses of their choice. However this is not as easy as it seems as you need to decide how much time and money you are going to spend on marketing yourself. There is a great wesite giving pointers on marketing yourself and it's very extensive: http://www.danheller.com/biz-marketing.html

Good luck!