I usually try and avoid the "headline of the day" posts, but this one is too good to pass up.  If you log in to your GMail account and go to settings then forwarding you'll find that GMail now supports IMAP. For those not in the know, IMAP is a lot like POP3 but much, much better.  Unlike POP3 which scans a single folder on a mail server and keeps nothing in sync, IMAP downloads all your mail and any folders you create on your mail client are synced back to the server.  This means that any time you send a message, any spam folders you may have, any custom items you create locally all get created at the server level.  If your computer hard drive crashes or if you want to move computers there's no need to deal with moving the data or pesky PST files.  All data is in sync all the time.

A better example is this:  I have an iPhone, three Macs, a Windows box and a Linux box.  How in the world am I to keep all of my mail in sync with these devices?  I could use only a webmail client but they are not nearly as fast or as powerful as desktop clients yet.  I could use POP3 and leave a copy on the server for a few days, but any message that I read on my iPhone I'll have to manually mark as read on my Macs, Windows and Linux machines.  In addition, if I send a message from my Windows box I'll have no way to access it from my iPhone or any other computer.  By using IMAP I'm able to keep all of my systems in sync.  Read a message on my iPhone and all computers will show it as read.  Reply to a message from my Mac and all system show not only that I replied but give me access to the reply.  Start a draft message on my iPhone, continue it on my Linux box and send it from my Mac.  That's the power of IMAP.  It's fast, easy, awesome and anyone who has really, really large amounts of mail (and not using Outlook) should be using IMAP.

And now it's available via GMail!  Can I hear a w00t, w00t?