I swear I'll finish the Rothbury thing. But I just found this and had to post it before I forget. This makes it seem like the concept was quite new (when the article was published on New Year's 2006). So did Phish make this popular or what? I've asked The New Yorker's music genius for help with no response yet. One of this blog's three readers said she tried to find out the answer via google and the first hit was this site! Not helpful to finding the answer, but funny.