I was invited to speak at jQuery Conf in India, so I travelled internationally to speak. The event gave me a free ticket, and I was not paid to speak. My travel and accommodation was fully covered by the event. My employer did not pay my travel expenses. It took me 2 weeks to prepare for my 45 minutes speaking slot, and I had a great time. I'm a man who has been speaking for 6 years. This was a not for profit event.