Tip of the Gmail usage : for Grouping and Searching in my MailBox

If I have several label in my gmail, I can find the mail for detail group easily.

For example,
I have some label such as 2007, friends, family, paper, etc.
When I wanna find the mail related to 2007 and paper,
I can search it by typing "label:2007 AND label:paper".

More information can be found "http://mail.google.com/support/bin/answer.py?answer=7190&hl=ko" in korean.

Good job!