Dzinergrl - 1:13 pm on Nov 23, 2008 (gmt 0)

I have been doing organic SEO for the past 4 years in the small to medium market. I have been very successful. Lately I have had 4 clients that once I have them positioned in the top 5 they backed up their code with another company and leave. Basically I have a competitor who is telling people that once you get there they don't have to pay me anymore. I'm thinking of stopping this service,however people are stealing my design storyboards too. what can I do to protect myself if anything?