Since I am still tied to the old PC technology, and I don't have a smart phone, I experience Vine through surreal, incomprehensible 15 minute compilations of a 150 or so. There are a shitton of these, like just for the last couple of months and I fucking love them. Maybe they'll get old eventually; I dunno.
The one thing I can say in favor of the trend toward everything being short and dense is that the small but perpetual backlash had produced some pretty good 17+ minute songs.