Rated 5 out of 5 stars
works fine on latest stable Firefox with Imagefap - perfectly integrated, too... I was just expecting the ol' toolbar option but, nope - nice little asthetically pleasing green arrows right next to the gallery title - just click, let 'em compile and then the zip file pops up for dl'.
Only just discovered rarchives a week or so ago, too - place is tooooooooooo good!
Cheers to the people behind this service/browser addon A++