In Brazil, it is illegal to share Internet connection with neighbours, the fine is about US$ 4000.
Article from Brazilian newspaper "Share internet with neighbors can generate fine of up to R$ 8000": http://bit.do/illegal-to-share-internet-connection
"According to the National Telecommunications Agency (Anatel), wireless networks can not exceed the perimeter of the residence of the subscriber and the signal can not be sold, regardless of whether or not to generate profit."
My father was threatened by Telecom here in New Zealand for this. They wouldn't provide broadband to him due to him being too far from the exchange and he made a passing comment about using his neighbours. They were rather nasty.
He lives rurally and his neighbour's house comes off a street that is considerably closer to the exchange. It's a rather odd mentality to refuse to provide something and refuse to allow a workaround that will still generate some revenue.
"According to the National Telecommunications Agency (Anatel), wireless networks can not exceed the perimeter of the residence of the subscriber and the signal can not be sold, regardless of whether or not to generate profit."