I proposed an idea to speak at DroidCon London in London, so I travelled internationally 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 paid all of my travel expenses, and I used my PTO to speak. It took me 2 days to prepare for my 40 minutes speaking slot, and I had a great time. I'm a man who has been speaking for 9 months. This was a not for profit event.