Thanks Gmail/Google for new IMAP support for Gmail. It is the most imp. feature.. that I wanted Gmail must have. I have set up my Apple Mail for IMAP on Macbook. Now because of IMAP, I can use Gmail and Apple Mail in sync. If I flag a mail in Apple Mail, it will be automatically starred in Gmail. My Gmail labels are now carried in Apple Mail as folders. If I move an email from a folder to another. It will be automatically relabeled in web Gmail. Also the status of read / unread email is in sync. IMAP is really something.. that will change how I use Email. Kudos to Google!

Some links for Gmail+IMAP How-to: Proper Gmail IMAP for iPhone & Apple Mail Official Gmail Blog: Sync your inbox across devices with free IMAP