I am convinced that you can find a free Wifi signal in almost any signal. Of course I am also the person that opens up their laptop walking around trying to find a free wifi signal whenever I travel to a new city. So many people leave their internet signal open that it leaves people like me open to taking their wifi singal and using it for free.
However, my method of walking around until I find a signal near a cafe isn’t for everyone. There are websites that publish listings of free wifi signals so you can find one without the random searching.
Websites like Jwire help you find signals across the globe that have been known to be completely free.