Google satisfied the in September when it allowed Gmail users to . But maybe these people wouldn't have had so much rage if Gmail were simply better at threading conversations. Facebook already does a decent job threading status updates, displaying the first message in full, followed by recent comments. A similar system will work nicely for email.

Integrated Bios

Ever get an email from someone, but can't remember exactly who it is? I'd love to see Facebook tie-in profile data from the people you're friends with, or whose information is public. This could include photo thumbnails and details that normally appear on the "info" tab on profile pages. Actually, an "info" tab on emails would be great.

Groups Integration

I'm still not completely sold on , which are supposed to be an organic way of organizing contacts by association. But the idea might be more alluring if it were carried over to email. An automatic labeling system for group e-mail blasts could allow users to see the messages they want and ignore the ones they don't.