I am a well known SEO, considered to be an expert by some. I have been actively involved on the web as a publisher and an SEO practitioner since 2003 (that makes me sound soo old).
I tend to think marketing is both powerful and dangerous, and hope that my contributions to the web manage to make the web a better place than it would be without them existing.
SEO is a challenging occupation since the field changes rapidly and central network operators (ie: Google engineers) are often biased against you and hope to see you fail.