I believe these apps are useful when traveling abroad and you don't want to pay a high amount of money for data. Of course, there's an option to get the local provider and use that data on the card.
Nevertheless, I will probably give it a try next time I'm out of the country. Going to stay...
Stumbled upon this blog POST on a suggestion how to get a free wifi connection with the help of these apps like WiFi you, WiFI map.
Seems like it could be useful while traveling for work or vacation. Anybody used them?