I dont know who they are either.
Wi fi is just internet flowing through the air, my computer always asks my if I want to connect with it and i always say no, but something is wierd with my plhone ,
so I connected with this wireless network thing, but I don't really know if is safe too, but I felt lost w/o the internet now so I tried it and it worked, I just don't know how secure it or insecure it is.
I have never done it before;