I live on an information barter economy. I go to lots of free events. DC is full of them.
In October, I’ll be launching Authors & Apps, an event where ebook authors talk about their books and app developers talk about their inventions.
I could probably charge people to come to the event, but why should I? I think it would discourage attendance. So I’m offering it for free, in exchange for the opportunity to go to other events for free.