Here’s a short video demonstrating just one way Firebug can help in Web design. I really don’t remember what I did before Firebug.
(Hat tip to compadre Mickey Mellen who inadvertently shamed me into upgrading to Snagit 11, which I used with glee to produce and upload this screencast.)
If you’ve got your own screencasts showcasing ways you use Firebug, please feel free to post them as video responses on my YouTube channel.