Earlier this week, the blogerati hurled criticism at Pink Floyd vet Roger Waters for a guerrilla marketing campaign promoting his upcoming The Wall Live tour. Turns out, street artists under Waters’s employ hadwheat-pasted a swatch of viral advertising onto a Los Angeles mural widely recognized as a memorial to the late songwriter Elliott Smith. Waters later apologized for the goof-up, but maybe he should have apologized for launching such an uninspired “street” campaign in the first place. In our weekly Taking sides column, Click Track’s contributors tackle the question: Is guerrilla marketing an effective promotional tool for musicians in 2010? Or has it become an empty gesture? Cast your vote in the poll below and read our thoughts after the jump.