If your site has been on the web long enough to get indexed by Google or Yahoo!, use your chosen keywords to do searches in the major search engines and see how your site ranks in the search results for each phrase. You can also use the web itself to find data on the keywords and phrases that readers are currently using to find your site. Both Google and Yahoo! offer many tools and information sources to webmasters who want more data on how their site is searched, what keywords readers use to find their site, and how their site ranks for a given keyword or phrase