Spacing Mag launches its third issue tonight, with a par-tay at the El Mocambo. Audio by Reid Jamieson and Audible. Work and Play in Public Space is the name of the issue, and it’ll be available round town following the launch. Torontoist is particularly interested in the mag’s new public space etiquette column, ‘Ask the Manners Duck.’ If only we didn’t have to ‘duck’ every time an absentminded, umbrella-wielding spacehog shared the sidewalk. The issue also includes a spread by the city’s top photobloggers, pics by the likes of TO talents Rannie Turingan, Sam Javanrouh, Matt O’Sullivan, Jonathan Day-Reiner and Davin Risk. Ergo, you’d best elbow your way to the Elmo.