2) Determine whether or not the blog is hosted at WordPress.com.
If you see a link that reads “Blog at WordPress.com” in the footer of the blog (linked to http://wordpress.com), this normally means that it is hosted here (although external blogs may place this in the footer, if they choose to). Also, if you are logged into WordPress.com, you will see your gray-colored admin bar at the top of your screen. If this is, in fact, the case, you may submit a formal DMCA notice at the following address by following the instructions at the following URL: http://automattic.com/dmca. Be careful with this; externally hosted blogs using the WordPress.org software may have WordPress links and hooks. This does NOT mean, by default, that it is hosted here. If you are still unsure, please feel free to contact our support staff for clarification.
Staff will be back/contact form should be open, later today. It's been a holiday in the U.S. so there has been a long weekend.
I'll modlook this thread as well.