New updates from Gmail Blog: Remote Sign Out, very nice feature for people who often too busy to logout from their GMail account, which can lead to abuse or misused by other people (if you are in public area, like in Internet kiosk or at school).
By using this feature, you can see your account activities if you logged in from other places. The best thing is that you can sign out remotely from your current place and the other session will also be signed out. It protects your account from being used by other people. Very nice feature huh?
I don't have this feature yet, as GMail is rolling it out step by step. Perhaps in the next few days it will appear at the bottom of my GMail account interface