Whereas traditional graffiti artists have primarily used spray paint to produce their work, "street art" can encompass other media, such as LED art, mosaic tiling, stencil art, sticker art, reverse graffiti, "Lock On" sculptures, wheatpasting, woodblocking, yarn bombing, and rock balancing.[5] New media forms such as video projections onto large city buildings are an increasingly popular tool for street artists—and the availability of cheap hardware and software allows such artwork to become competitive with corporate advertisements. Artists are thus able to create art from their personal computers for free, which competes with companies' profits.[6]
