From: 5 Tips for Power Users
Now that you’ve got the buzzes hitting your inbox under control, let’s get serious about organization by using Multiple Inboxes.
There are some really good tips here, but the multiple inbox tip is probably the best. Even if you aren’t using Google Buzz (or don’t want to use it), multiple inboxes is a huge feature in gmail that will go a long way in keeping you organized.
Oh, and here’s a good article for the Buzz haters–how to disable Google Buzz. And there’s more to it than just clicking the link at the bottom of the page.