This summer we went to Bermuda. We decided to rent a cottage instead of staying in a hotel. That way we'd have more room (separate bedrooms and two bathrooms) for the same amount and get to use the ferry system. I looked around before finally settling on a place. It was gorgeous and perfect for us. They even offered free wifi!
After we got settled I talked to the owner and asked about a wifi code. That's when I discovered that "free wifi" actually meant "if you stand in a couple of spots on the property you can steal wifi from the neighbours."
Technically, I suppose the advertising was free. And least it meant that we didn't spend any time surfing the web.