A few years ago I created a wifi map for Cardiff. It became quite popular. It spawned lots of other city wifi maps around the world. Chris Duran then built a site for Australian wifi maps, and we talked about trying to make a global wifi map that was editable by anyone. A Wikipedia of wifimaps, if you like. But in between his PhD and my various projects it never quite happened. If you would like to help us build it then please get in touch.
Anyway, here’s the Cardiff one.
If you’d like to see a bigger version, or to edit this one and add your own hotpsots, then please go here.