Awesome Rated 5 out of 5 stars
This add-on *rocks*. It's in my top five. Firebug is in my top five. And I'm a web developer. That's how good it is.
One feature request though: I wish I could choose (per folder) whether subfolders will be available to me. Some of my folders have a bunch of stuff in them and it will hang for a frustrating moment while it sits there and looks for subfolders.