You may know people who take grammar very seriously. *cough* George *cough* But, how about sneaking out in the dead of night, and breaking graffiti laws to correct a sign?

The video above from the BBC, features a person who has been going out in the middle of the night, armed with paint or stickers, correcting signs for about 13 years. He's even invented a contraption in order to reach tall signs to make his corrections.

To be honest, I don't think that this is a crime at all! If anything, he is doing a community service. I applaud his efforts.