Easy Youtube Video Downloader Express is (in my opinion) the absolute best video down loader for my Mac. I say this because of 1. Ease of use: all I had to do was add the extension to Firefox and it works. 2. The incredible support offered when changes are made by Mozilla or Youtube. Though it can be slightly frustrating to be down for a few days when aforementioned changes occur, I know support is working on the issue and things will be rectified shortly. Please keep up the great work as I could not get by without you. My education depends on being able to download and archive Youtube videos that aide my learning process. Thanks so much for an invaluable service.