This is interesting to me, as one of the stand-out annoying things I've had to adjust to in life down here is the lack of regard for the personal space of others (in any setting: the street, grocery store, gym, etc.). I wonder if anybody can shed some light on why it's ok to barrel towards some stranger on the street and run right into them without even looking or acknowledging, but in a milonga someone would afford the other respect of personal space? It is sheer reverence for the dance and respect for TANGO alone, rather than individuals? Not to take this thread off-topic but this lack of respect for personal space is a recurrent source of frustration for me and many other expats that I know. The Argentines, well, they just don't seem to notice or apparently care (I guess unless you're in a high class milonga).