It could be something like this...
From: (my e-mail address, it could check with the server for validation)
Subject: (subject line)
In the message body
Mood: (mood keyword)
Picture: (picture keyword)
Text: (my text posting)
Once you type in the END: command, LJ stops processing after the end line, because some of the people has a sig. at every outgoing email, which could mess up this.
What do you think? Comments?