Seth's Blog: Should you work for free?:
The challenge of this calculus is that it keeps changing--the landscape changes and so does your work. When I started my professional speaking career fifteen years ago, not only did I speak for free, my company even paid money to sponsor events so I could speak for free. When TED offered me a chance to speak for free, years later, I took it, because, in fact, the quality of the audience, the attention to detail and the chance to make an impact all made it worth it. But when SXSW, a corporation that makes millions of dollars a year, offers me a chance to be a speaker, pay my own way and hope to get some attention from their very overloaded audience, it's easier for me to say, "free makes no sense here."