This plugin does exactly what I need! It lets me create a personalized signature for each user, which is important for blogs with multiple authors, guest bloggers, etc.
Sadly, I almost didn't find this plugin at all. It shows up in Google searches, but it doesn't show up on WordPress.org searches. You can see for yourself:
Can you please do something to make sure people can find your plugin on this site?
Thanks very much,
[ Signature moderated. ]