A Cleveland heavy-metal band has turned to an online audience to fight the parole of the man who killed one of its guitarists in 1988, the latest use of Internet petitions to attempt to influence parole boards. The Ohio parole board said Tuesday it would consider online petitions filed in the case of Robert Bedzyk, who was sentenced to 15 years to life in prison for killing Destructor guitarist Dave Iannicca. But one Internet expert said such drives can overstate the backing for an issue because of easy accessibility.