Paraphrasing myself from another thread. That said, I think that the Harlem Shake is one of those fifteen minutes of fame kinds of phenomena. It won't be around long enough to seriously damage the integrity of "pure" tango, IMHO. As a deliberate tango outsider, though, I have to say that I find it refreshing to see that there is a tango scene out there where people are low-key/humble enough to allow for another dance on the hallowed tango floor. It's nice to see that not all tangueros take themselves too seriously to get a good laugh.