This is a preview of the new beta testing, so you Should http://draft.blogger.com to log in to write or try a new post preview. On the New Post page, click on the Preview button, and you will of see a new window open with the WYSIWYG (What You See Is What You Get) preview of the post. This is how your blog post to your readers will from Appear Pls you publish, with The Same format and style of your current theme Blogger. And to host the blog you can check out some plan under blog
Note That the preview page does not automatically updated as the contents of the post changes. To make sure the post looks OK after you've done further editing, you can manually refresh the preview page, or click the Preview button again.
(Source: Blogger in Draft)