Trying out the Seesmic plugin for Wordpress.
Seesmic post from Wordpress 

UPDATE: Success! I initially tried to post the video using IE and went into an endless loop of “Please wait, posting video”. Firefox 3 beta 5 had no issues. Comments can also be in video form as well by clicking on the “Or add a video comment with Seesmic” link at the bottom of a blog post. You can post a video even if you do not have an account with Seesmic. I have not tried that feature yet. Feels weird to post a comment on my own post.