I just got this email from Blogger, which is the same service that TSA uses for their blog. In it, they mention that the ability to delete posts is now included in the moderation center.
Hopefully you’ve noticed the new Comments tab in your dashboard, which we added over the summer as part of our upgrade to the comment system. This Comment Inbox is a centralized place where you can manage all of your comment-related tasks, like delete published comments, manage comments that have been flagged as spam, and moderate awaiting comments (if you’ve enabled Comment Moderation).
I don't remember where Blogdad Bob posted it, but I do recall a post he put up about it not being possible to delete posts.. hmm
http://buzz.blogger.com/2010/08/new-...m_medium=email
This is a screen shot of the comment inbox. Looks like you can mark as spam AND delete:
