Rated 3 out of 5 stars

Like so many wrongheaded decisions in Mozilla developer land, I watched the bugs requesting this functionality languish in argument for years. I was so happy when this extension came out so that this incredibly valuable feature that should be the default was at least available to those that managed to find it.

However, on Windows, at least, the add-on is no longer working, as noted by previous reviewers, and still the case as of Firefox 29.0.1. This is a bummer as I had been downloading files that I expected to be able to go back to and have meaningful last-modified timestamps for some time before I realized the code was now broken.