Just to add onto my earlier post...
The wi-free service would work over most data networks.... wifi hotspots, mobile data networks et al.
There
was some brief explanation of how the service works on their old
webpage... I haven't dug out any archives/cached pages for that.
This page will probably offer some sneak preview on what was involved.
PS : I had to re-post this since my earlier mail that included some attached screen-shots would have to wait for the moderator's approval (read "to be done next year at minimum"
)
Tony.