I read this morning in the NY Times Sunday Review, a very poignant article, by Tim Kreider expressing much of how I feel about doing work for nothing, in particularly I am referring to creative work.
I love this. I'll file it for future reference to use next time some one expects art work free gratis.
"Thanks very much for your compliments on my [writing/illustration/whatever thing you do]. I’m flattered by your invitation to [do whatever it is they want you to do for nothing]. But [thing you do] is work, it takes time, it’s how I make my living, and in this economy I can’t afford to do it for free. I’m sorry to decline, but thanks again, sincerely, for your kind words about my work."