How Gmail works?
According to Google, magic happens through sophisticated and ultra secure data centers, with the help of overweight engineers :)
Google Calendar is supporting offline mode
Apparently, Google Calendar has an offline mode just like Gmail. As always, you’ll need Google Gears to be installed in the first place.
New in Gmail Labs: Location based signatures
If you have Labs enabled in your Gmail account, you can now display your location information at your signature. You’ll probably find this useful if you are a frequent traveler.
