Personally I wish the term 'Wi-fi' would be taken out and shot.

That aside, I pinched bandwidth once to check the Ashes scores at a traffic light, just 'cos I could. But I don't make a habit of it.

Flatmates and I have idly considered setting up a mildly-throttled free-for-all base station (we have three, only two of which are presently in use) for people to use.