I proposed an idea to speak at DrupalCamp in Edinburgh , 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 paid all of my travel expenses, and I took unpaid time off to speak. It took me 1 hour to prepare for my 45 minutes speaking slot, and I had a great time. I'm a man who has been speaking for 15 months. This was a not for profit event.