that Facebook is overhauling its message service and turning it into full-blown e-mail. Remember when everyone last June? Your Facebook e-mail address could be vanityURL@facebook.com. The so-called "Project Titan," launch date unknown, would also include POP/IMAP support for checking mail outside of Facebook.

That's a good start, but here are five other features I'd like to see in Facebook e-mail:

Here's where Facebook e-mail could really flourish: The site already lets you divide friends into distinct lists, such as friends, family and work. An e-mail service could sort incoming messages accordingly, letting you check separate inboxes even when everything's going to the same address.