A bird? A plane? No, it's a pair of mangy sneakers dangling from the powerlines.
Shoe-flinging, or shoefiti, has emerged as one of the more inexplicable forms of cultural expression in inner-city Melbourne.
—Lyndal Cairns, "Heels and toes and then a fling," Northcote Leader, January 3, 2007
—A celebration for a rite of passage, such as a graduation.
—Hazing, such as throwing a freshman's shoes over the line.
—A memorial, to commemorate someone who died near the site.
—A simple prank.
The other two theories are more controversial:
—Shoes signify a place to buy drugs is nearby.
—They're a sign of gang-related activity, such as marking territory or commemorating a gang murder.
—Terry Rombeck, "Laces wild," Journal-World, March 5, 2007
—Ed Kohler, "Secret powerline codes: a couple cops weigh in," shoefiti.com, September 20, 2005