[最佳答案] The third option will probably work for the initial page load, but any links on the page will then direct the user to the BlogSpot page, and change the url. It simply fetches the page from blogspot, and then sends it to the user without any changes. For me, the changing url is not a big deal, as long as it's easy for the user to get from one to the other easily; have prominent links on either page that tell the user where they go. Most people don't care about the url, they just care about the c