The WordPress Default Link Structure is not search engine friendly. If you have a WordPress blog check the URL of your posts in your browser address bar. If it ends in /?p= and then a number, none of your post titles will be searchable by search engines. If you want your WordPress titles to rank with search engines you need to change from the Default Structure to Custom Structure. In this 4 1/2 minute video I shows you how to make your WordPress Posts have a searchable URL by using the custom WordPress Link Structure.