Few times ago I have created a mirror blog in Wordpress.com, where the post are the same of here. The copy of the post are very easy because I utilize the tool import of WordPress, which once the authority is checked correctly, it can import all the posts and comments from Blogger to WordPress.
Such tools is in:
Tools -> Import -> Blogger
For each time you want to import a new post, you should click on Reset importer and then, once the page refreshes, click on Import.