Basically it uses Bitcoin for micropayments to access cheap WiFi. This gives users cheap WiFi and lets hotspot owners make money off of offering their WiFi to people.
My thoughts as well. Wifi service providers just opened the doors to bitcoin by accepting it (bitcoin) as a form of payment.
In our country there's like a payphone that you can drop a few physical coins and it will generate a slip with password for the wifi.
maybe in the future there will be one like that but accepts bitcoins instead of the physical coin.