How Anti-gravity Could Change the World

If practical anti-gravity ever becomes a reality it will revolutionise transport, especially long distance transport.
Transport costs of freight goods and bulk commodities will go down significantly.
Travel to space will become cheaper, opening up space travel to most of the world and allow humans to expand into the solar system.

There has been lots of scientific research into ant-gravity, but so far it seems like it is a long way off.

You can read a bit about the history of the idea and research about anti-gravity on Wikipedia.

What other positive or negative outcomes do you think may come from the advent of anti-gravity?