This is a test of Deepest Sender, a Firefox extension that allows people to post to their blog(s) without having to go to the site directly.
So far the only issue seems to be that I can’t upload files directly, but I can always go to the WP.com website for that. As it is, I don’t really have a lot of files that need uploading. The WP.com interface’s slowness has often bugged me (hey, internal spellcheck!) so this would be much MUCH better.