As far as certification goes - I agree that it's nice to have something. I'm finding the food handler's certificate is important, again from the sanitation and health standpoint. My kitchen and my clients are miles above many of those. I'm proud of the homecooking that I do for my clients. They love it and could care less about my training, licensing or certification.
Education is important.
This forum is one way that we can expand and share what's important in this wonderful service. The key word here is sharing. I am also crazed about personal cheffing. What's most important to me is that this industry expands with a good and reputable image. There's lots of room for organizations and many, many new personal chefs.