The new version of Blogger supports in-page comments, OpenID, and Google Account. For detailed methods, you can check here. This feature eliminates the need to use the slightly complicated Blogger-Hack from the old version of Blogger. However, the new method seems not to work for some templates. The new version of Blogger can also be modified via XHTML and CSS. But if you don't know XHTML and CSS and you're also lazy, you can look at the method I introduce today.