In addition to the 'Trailer/Commercial' and possibly "Original Work" flags for videos that came up serveral months ago, a recent thread made me think it might be nice to have an 'instrumental' check box as well.
While I don't think it should be necessary (or, for the most part, a good idea) to have categories for al- types of music (mainly because different people define things different ways, and it could get confusing fast), songs that are entirely instrumental tend to be different enough (and the videos that go along with them correspondingly) that having a flag for them would be useful. We have one for 'Dance', so I'd think this one shouldn't be a problem.
