SEO stands for Search Engine Optimization; a concept that states that maximizing your website to be scanned by search engines will maximize it’s ability to gain readers and traffic. It makes a bit of sense to be aware of how Search Engines see your site, though I don’t suggest you go crazy worrying about it for too much time. This site claims to have the ultimate list of tips on how to optimize WordPress for SEO, I’d suggest looking it over to at least get some basic ideas on how this works.

http://www.dech.co.uk/2005/11/ultimate-WordPress-seo-tips/