We are five hitchhikers who have used our thumbs to travel over 270,000 km collectively in 30 countries. AuA about hitchhiking!
Hitchhiking is a wonderful (and of course free) way to see the world. A lot of people have come to believe that it's a thing of the past, however it's still a very realistic way to travel, practiced by thousands each year. In the past decade there has been an incredible comeback (see here). In addition, new technologies have made it safer than ever. The five of us are happy to answer any questions you have on the practice, or just share our experiences on the road. We've done our best to provide proof. Ask away!
EDIT: Alright ya'll, it's been 12 hours and we've done our best to answer every single question. It's been fun and I hope you all learned a thing or two. If you are ever interested in giving thumbing a try, we're very friendly over at /r/hitchhiking, and would love to help you get started. Keep your thumbs out!
We are (In order of mileage):
Countries: Canada, USA, Costa Rica
Mileage: ~105,000 km (65,400 mi)
Countries: Canada, USA
Mileage: ~91,700 km (57,000 mi)
Countries: Austria, Belgium, Czech Republic, England, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Morocco, Netherlands, Northern Ireland, Poland, Portugal, Scotland, Slovakia, Slovenia, Spain, Wales
Mileage: ~40,200 km (25,000 mi)
Countries: Canada, USA, Australia, New Zealand, Japan, Laos, Bhutan
Mileage: ~21,400 km (13,300 mi)
Mileage: ~19,000 km (12,000 mi)