I was invited to give a workshop at HighEd Web in Milwaukee, so I travelled domestically to speak. The event gave me a free ticket, and I was paid 600 USD to speak. The event did not pay for my travel and accommodation. My employer did not pay my travel expenses, and I took unpaid time off to speak. It took me 10 days to prepare for my 75 minutes speaking slot, and I had a mostly good time.