Being on vacation, I was biking in the Crimea Mountains. We chose an unknown route between different locations using different GPS tracks available on tourist's forums as guidelines. Several times we got in trouble because of that.
Sometimes there was no route for bikes at all. Sometimes we were unable to find the breadcrumbs at all, because of a GPS precision error. So to find ourselves, sometimes we used old fashioned paper maps 1:50000.
Another kind of troubles is unavailable mobile connection and, thus, Internet. So no Google maps ;).
However the most annoying thing probably was the shortage of power sources. Phones, cameras, camcorders, flashlight, walkie-talkie, well , in short everything was out of power at some point.
But that is enough about the bad. The good: Starting with communication on social websites we were able to ride from end to end without major troubles and were able to get videos & photos of different, mostly very good quality images from amazing places. After that we were able to share the images (gigabytes) over different Internet means, file sharing services, p2p, image services like Picasa, sharing them between people living in 2 countries and 5 cities without major problems.
Despite the troubles I would say it is a triumph of technology. Sergey Rogachov CTO.