I have just read today that Facebook is working on creating @facebook.com email -the so-called Project Titan- accounts and Google is considering setting up status updates on Gmail so you can see what your friends are up to. Interesting.
Gmail is a pretty good email service, offering lots of capacity and quite user-friendly. I still miss the typical folder structure because I am one of those who hates having a lot of stuff in his inbox and with Gmail that is exactly what happens. The labels that you can now attach to each emails somewhat replace such feature but to a lesser extent. Overall I am happy with Gmail and given that I have been using it for so long, I find it hard to think about changing overnight to Facebook mail or to any other. The only idea of replacing all my signing in details in every single site in which I am active or the transition process until everyone is aware that you have a new email account are big deterrents.
On the other hand, the move by Google to offer status updates to Gmail users is quite curious. At this point I do not really see myself using it. My audience is different on Gmail, Twitter and Facebook. As of today I make a difference between fun (Facebook) and work (Twitter-Linkedin) and that is why I to not have updates in sync. Audiences differ and I do not necessarily want one audience being aware of some issues and vice versa. My Gmail contacts at this point include people from both audiences so it would be hard for me to filter. The fact that people are spending so much time on Facebook might be a little worrisome for Google and the status update move might work in that direction.