Portal 3 leaked trailer?

Hate to be that guy, but Portal 3 ain't happening, folks. Notice how the only sites talking about Portal 3 leaks are the sketchy-looking ones that you've never heard of before? There's a reason for that.
But really, I'm not too disappointed about that. Portal was a great game and Portal 2 just blew everything out of the water, but the story was concluded on a fantastic note. There's nowhere else to take it. Better to leave the audience wanting more than to overstay your welcome.