Spider Simulator

To understand search engines you need to start seeing through thier "eyes". Search engines use programs called "spiders" to crawl acros the web and gather information about the pages it visits. One of the key factors to understand is spiders can only see text, and links graphics have no meaning to them. To help you get better understanding of this point try a spider simulator.
Try looking at different pages and see how different the look to whats on the screen.