I have over 10 years as web designer and developer. I have worked on simple site such as personal site to very complicated social network to multimedia sites. Most of sites that I developed for clients, they manage themselves because after each job I train and teach them on how to maintain site by themselves. My motto to my clients is that if they aren't happy with my job, I will provide them with full refund. So far no one ever ask for a refund because I made sure that they are happy with my work.