5 つ星中 4つの評価を受けています
I installed Add-on Version 7.2 on German Seamonkey 2.33.B1 Build 20150223174142 on German WIN7 64bit. Everything works fine, Download-Link appears left from "Add - Share - More - Like/Dislike".
Small disappointment: Only offers FLV 240p, MP4 360p, MP4 720p (sometimes even less). Promised 3GP, MP3, MP4 1080p seem to be missing (I tested 20 YouTube videos)?
Suggestion: can the Download-Button get a Tooltip like the other options?
Mp3 is not working great at the moment so it is missing.
I will surely implement the tooltip thing soon and will get you an update.