Sounds like all you guys are permanently in a hurry? I have no problem with people stopping to chat on a sidewalk. Actually it's one of the things I like here. I have only been living in my new neighbourhood for a few months but I already know lots of the neighbours, the porteros of other buildings and the small shop owners and I would be quite upset if I didn't have anyone stop and talk to me as I do my morning or evening shop. The small village atmosphere in the midst of a big city is quite charming. It may take a bit longer to get things done but it is a much more pleasant experience. I would be very annoyed of some gringo deliberately crashed into me because he confused a sidewalk with a motorway. If you are in a rush get a taxi. Sidewalks are for wandering and chatting. Maybe not in NYC, but you are not in NYC! Please adapt or go back, rather than trying to impose your habits on my new community.