I proposed an idea to speak at O'Reilly Fluent in San Francisco, so I travelled domestically to speak. The event gave me a free ticket, and I was not paid to speak. The event did not pay for my travel and accommodation. My employer did not pay my travel expenses, and I was working while speaking at the event. It took me 1 day to prepare for my 30 minutes speaking slot, and I had a bad time. I'm a man who has been speaking for 5 years. This was a for profit event. Also, I bailed a few weeks ahead of time because the conversations around covering any expenses at all were silly.