According to the folks at Techcrunch this is in the process of happening. It wasn't that long ago that myspace jumped into the email now facebook plans to follow. Its reported that what ever you picked as a vanity URL that will also be your facebook email Like geekdrops's facebook is facebook.com/geekdrop so when the email kicks off it will auto give one to geekdrop and it will be [email protected]
Facebook’s Project Titan: A Full Featured Webmail Product
First, our understanding is that there will be full POP/IMAP support, meaning users can access the account other than through Facebook itself. Your email account name will be your vanity url – [email protected].
Email is all about identity. And Facebook is ahead of everyone else in the identity game via Facebook Connect. Facebook says more than 60 million people log in to 80,000 third party websites each month via Facebook Connect.
Tacking a real webmail product on top of those vanity URLs and Facebook connect is something even Google may shudder at. Gmail killer? I don’t think so. But a strong product move nonetheless.
I think I will be keeping my gmail email address 
I think its keeping up with the jones (myspace) but I can say I don't plan on using it when it happens. I don't use myspace email and I wont use this one either
.


Single & Not Looking
I don't know why they even introduce this, I mean does anyone really need another email address?