Trent Reznor has 40,000 followers on Twitter, and the gumption to tell them all, "You know that feeling you get when somebody embarrasses themselves so badly YOU feel uncomfortable? Heard Chris Cornell’s record? Jesus."

I've felt that kind of sympathetic embarrassment both upon hearing Chris Cornell's first record, and upon hearing that a rock legend in his mid-forties is making fun of another one on Twitter. There's nothing uncommon about aging rockers piling on the youthiness, but this 20th century feud on 21st century technology subtracts a few years too many for my money, as does Cornell's lame attempt at the high road. Let the fun begin!