Libel tourism is when someone from another country who lives in a place with weak free speech laws goes somewhere else to sue someone for something they said about them. For example, if someone in the UK said something bad about someone in another country, the person in that country could go to the UK and sue the person who said the bad thing. Libel tourism makes it difficult for people to speak their mind, since they could be sued if they say something that someone else doesn't like.