Google has got to be now the most powerful search engine on the Internet. As a web designer it is important to get companies noticed; having a nicely designed website is simply not enough alone. Since Google delivers the most relevant search results it is essential to use the relevant 'keywords'.
Googles webmaster guidelines is a resource that explains how Google finds your website and ranks it. The resource also shows you the top search queries bringing people to your site. Having an understanding of how Google discovers and ranks your website is an essential tool for a web developer and this information is freely available to the public at: "Your site and Google"