Structuring your website is an important part of best practice in search engine optimization. WSM's Site Of the Day is a free tool to help you visualize the layout of your website. Just enter a URL and the site's structure will be displayed within a (Java-based) graph. Different colors have different meanings; for example, blue is for links, red for tables, green for div tags, and violet for images. Click the thumbnail below to see the graph for WSM's Who's Who Directory.