Probably one of the most important things to have when starting a new site is a high search engine ranking. With most sites, search engines can account for up to 95% of traffic. If you're not placed in the first three pages, it's unlikely you'll get any traffic from a search engine. Google is one of the fastest growing search engines, a high listing here will guarantee you traffic. Google's results are also used by Yahoo when it's finished displaying its own results. To get a high ranking in google you need to design your pages and promotional methods around it.
Google is the best search engine because it is user friendly. So make your website user if you want to rank it high.