Rated 5 out of 5 stars

After all these years, still the best. The only significant improvement for me would be to implement Venkman-like js debugging, but that's asking a lot.

For those who experience problems, try disabling other add-ons before assuming FB is causing the problem. In my experience, more often than not, it's another add-on's fault.

This review is for a previous version of the add-on (1.11.1.1-signed). 

Indespensible, but 1.4 is flawed Rated 4 out of 5 stars

This is an indespensible add-on, but as many have pointed out, 1.4 has problems. I won't repeat them, but I'll add that I don't like how firebug windows are now shared across all tabs that have pages open on the same domain -- whether you want this behavior or not (not sure whether this changed in 1.4 or 1.3). Used to be that each tab was treated as its own instance, which is how it should be. A lot of real estate is wasted now on tabs where I don't want/need firebug open. I'd really appreciate having firebug revert to its one-instance-per-tab behavior.

This review is for a previous version of the add-on (1.4.2).