I recently started to post more articles on SEO and SEO Speakers.

The reasons are simple.  One SEO Speaker is not ideal for all audiences.  I teach SEO with Blogs and Social Networking.  Also, I drill home the importance of lead generation and ROI for your effort.

My article: Hire the Best SEO Speaker can help people that are doing an event and want to hire an SEO speaker that is a good fit with the audience and their goals.

Take a look at those articles and think about what is best for you.  SEO is a broad set of skills, not one set of established skills.  Some people excel at link building while others use SEO with Blogs to get results.  Just make sure you understand what your goals are and find someone that can help you get there.