Britain's OfCOM on free wifi:
"If you provide it as a public service (e.g., as a homeowner with an open AP for your neighbors to use), you're liable for any copyright infringement that takes place. But if you provide it as part of a business (e.g., free wifi for coffee-shop customers), and we don't care what you do - at least, for now." Jesus Christ, OfCOM - double standards much?
To quote JohnAHind from the comments thread:
This is like giving brewers the power to complain to water companies that they suspect illegal home-brewing and then the law compels the water company to cut your water off with no prior legal process!
And since there is no penalty for making a false allegation, brewers are free to use this power to harass any individual who says their beer tastes like cat's piss!