Aaron Wall of SEO Book has put together an excellent search engine marketing glossary, covering a vast multitude of terms. The range is so wide that it’s worth a look whether you’re a complete novice or a seasoned veteran of search – everything from Google and PDF to Mechanical Turk and Singular Value Decomposition is explained in clear, concise terms.
Head on over and have a look. It’s not only educational, it could also provide you with some great ideas for your own website and marketing efforts.