I've been programming for over ten years, mostly PHP and mySQL programming for the last four.  One thing I focus on when I program for a web site is making the code seamless and unobtrusive to a search engine's bots and spiders.  My formal training was in database design and management, so I approach each project from the aspect of how is the data currently maintained; how are is it likely to grow in the future.  Once I have determined that I built a solution that not only helps the client now, but allows the possibilities for growth and change in the future.