"Exposure" is an excuse used for not paying artists and musicians. You can't pay the mortgage, the phone company, the grocery store, etc. with "exposure". What artists and photographers are also dealing with is the same problem musicians are dealing with - more people wanting their creative work given away for free. I can choose to give my work to a charitable cause if I want, but as long as I have to pay bills with my work, I need to get paid most of the time. When an artist gives their work away or discounts its value, they just get the reputation of being the place you can get cheap or free art. That kind of exposure no working artist needs. It does not build up your reputation, it tears it down.