The most useful new feature in Firefox 3 is that it lets you zoom whole Web pages, making them bigger and smaller to enhance usability. Previously, you could only resize the text, which made the overall page look lopsided and funny. We'll show you how to use this new feature -- it's pretty simple, which makes this a pretty short video.

For more in our Firefox tour, check out our videos on the browser's new phishing and malware protection and the awesome AwesomeBar.

Update 7/2: See the video on the new faster bookmarking system in Firefox.