Base the site structure on language that visitors use to find it. Peter Da Vanzo believes a poorly designed Web site architecture can harm a company's search engine optimization (SEO) strategy. So he describes ways for marketers to align their site architecture for visitors from search engines, beginning with keyword research and mining tools. Patterns will begin to emerge, he writes. Dump the words into a spreadsheet to determine the frequency. Da Vanzo also takes us through tips for site nagivation and defeating Google Panda and Penguin.