Where do you live? Finland? I've heard that making eye contact is avoided there. If you don't make eye contact, you don't get to meet people of the opposite sex, get acquainted and eventually get married. It's no wonder the birth rate is low in Finland. After 18 years in Buenos Aires, I'm used to making eye contact and greeting people in all kinds of situations: getting on an elevator, entering the waiting room at a doctor's office, checking out at the grocery store, walking past the local restaurant, seeing a neighbor on the street. This is a friendly city. I've never gotten any inappropriate comments on the street, only a soft "que elegante" from men walking by. If one wants to dance in the milongas of Buenos Aires, the cabeceo is the best way. Verbal invitations don't come from good dancers.