Works marvelously. Simple, no nonsense. A functional queuing system which doesn't break with more than one tab (as the native one does).

_Sidenote: I only wish we could toggle the automatic clean-as-you-play feature it has, and add a link to a playlist made with the "&video_ids=[list]" trick (which in combination with the "Multiselect for YouTube" add-on would mimic all the features of the broken native queue). But those are just wishes, the add-on delivers what it promises.