Next, Visit Google (or use your new toolbar) to type in 5-10 different keyword or phrase searches which you believe searchers interested in your site might use. Other search engines of note are Yahoo, MSN, and AOL. Google, however contributes to search results from Yahoo and AOL, so a Google search should let you know what you need to for roughly 75% of web searches. MSN seach results are provided by a different engine, Looksmart. Therefore, it is recommended that you check at least Google and MSN searches to come up with your principal competitiors.