yes, ladies and gentlemen, the smilie turned 25 today!
It was invented by a Mr Fahlman who made a bet that it was possible to use humour on the internet. He used it to mark his jokes.
Fahlman posted the emoticon in a message to an online electronic bulletin board at 11:44 a.m. on Sept. 19, 1982, during a discussion about the limits of online humor and how to denote comments meant to be taken lightly.
"I propose the following character sequence for joke markers: :-)," wrote Fahlman. "Read it sideways."
It's hard to believe nowadays that many people thought you couldn't express humour on this medium. After all, you can write humourous essays, plays or novels. So why should it be any different if you use something else but paper?
And of course the source: newsvine