Rated 4 out of 5 stars
This extension is very nice and useful. I often use it to download data (like Flash videos) that I would like to store but can't even bookmark due to odd page structures.
The claim of somebody else that it doesn't work on Mac is wrong: I use it on Mac on Firefox 188.8.131.52 and it works pretty flawlessly.
However, on the Firefox 3 Alphas it doesn't work (the list shows up empty). So maybe you want to investigate that before Fx 3 gets released so that once it does, you can say "look here, my extension works great with the new version!".
Anyway, thanks for making this.