Multiple Websites designed and geared to the search engines liking can be an effective way to acheive good listings and be found. By creating search engine friendly websites that point to your existing site is commonly used but there are some things to do to stay away from trouble. Always optimize only to whats relevant to the page, and do not keyword stuff or fluff your content, also never use the redirect that comes in your websites cpanel. You must create web sites which have at least five or more pages of real good content.