I'm Googling from clues, such as flags, and words in signs. I get very excited if it's a town rather than just a road in the middle of nowhere. For example, I googled a flag, which turned out to be Madeira, then googled exactly where Madeira is (I had no idea is was so far from the mainland!) And voila! A nice high score. 
It doesn't work for the Australian outback, which is often remarkably similar to areas of Brazil, so I've learned.