IE6 users represented around 18% of our user base at that point. We understood that we could not just drop support for it. However, sitting in that cafeteria, having only slept about a few hours each in the previous days, our compassion for these users had completely eroded away. We began collectively fantasizing about how we could exact our revenge on IE6. One idea rose to the surface that quickly captured everyone’s attention. Instead of outright dropping IE6 support, what if we just threatened to?

Source: A Conspiracy To Kill IE6

I salute these brave developers inside YouTube for pushing the web forward and leaving IE6 behind.