With more and more people transitioning from older 4:3 televisions to newer LCD and Plasma 16:9 TVs, you knew it was only so long before YouTube would make the transition also. Earlier this week (as an early holiday present) YouTube went from a standard 4:3 screen ratio to a 16:9 screen ratio, making it too widescreen. What that means is that all the videos you’ve uploaded or seen in the past will have the black bars on the left and right side of the video. From here on out though more and more people will be shot and uploaded in HD widescreen making the black bars more and more uncommon over time.