by tommychips

I want to drive traffic to a website, there are no adds on this site. It serves a purpose for a large group of people, it provides a free service and connects people. I already have over 40,000 uniques per month. I am scared to buy traffic to keep my numbers up. I am at my budget for advertising. I do use certain outlets and social bookmarking, but now I am stuck. I just want to tell people. Ideas?