Well, since live performance is a better way to make money these days than selling recorded media, I suppose that one can seriously augment one's income at a gig by flogging the baseball hats, teeshirts, christmas tree ornaments, and signed vibrators.  Kind of annoying, though, if you're the talent.  I mean, isn't that what a girlfriend is for? - flogging CDs out of a suitcase at half time...  

  I mean, I imagine you can just *predict* the banality of most lobby conversations.
                                        
                                        "Hey, great performance!"
                                        
                                        "Thanks."
                                        
                                        "Where you playing next?"
                                        
                                        "Seattle."
                                        
                                        "Really?  Wow, that's so cool.  Hey, can you sign my CD?"