Just added this extension and it's definitely "Easy" to use, with the "Download" button/options clearly displayed as in the screenshots. Although the 1080p is for "PRO Users" only, the 720p is FREE and simple as downloading any file from the web. I just downloaded two videos and when I play the MP4s in Windows 7 (MS Media Player) they look better than when I play them in YouTube at 1080p, but that may be because they may have only been recorded at 720p. [[EDIT: I found 1080p recorded YouTube vids and I can see the difference in the 720p download, which is no big deal for me.]] Anyway, now I can archive videos from a YouTube account our company no longer has login access too.