Interesting article from the BBC News Magazine which tries to throw some light on the story of the most commonly used word, OK.
This is the beginning of the article:
'It crops up in our speech dozens of times every day, although it apparently means little. So how did the word "OK" conquer the world, asks Allan Metcalf.
"OK" is one of the most frequently used and recognised words in the world.
It is also one of the oddest expressions ever invented. But this oddity may in large measure account for its popularity.'
Click on the picture to read on.