Brainstorming

I am constantly brainstorming, trying to think of ways to promote my photography business. I don't have much money to spend on marketing right now so I am mostly relying on Facebook and word of mouth. What is it that people are looking for in a photographer? I know that people seem to like my work. A lot of people tell me they love my pictures but I'm not getting a lot of business. I know the economy is bad right now. Is that why? Tell it to me straight people! I want to know what I'm doing wrong? Or give me suggestions. How can I get the word out to the people?