If you've ever driven in Europe--or more specifically, the autobahn--then you understand why this is so important. Thankfully, www.driverightpassleft.com is there to educate those that haven't.
It's important because we want to go freaking fast, that's why!
Seriously, we're usually law-abiding citizens when it comes to the speed limit (OK, maybe almost law-abiding), and nothing grinds our gears like left-lane squatters. In our opinion, lane discipline allows traffic to flow easier and makes everyone's commutes safer.
Check out www.driverightpassleft.com the scoop on laws in your state, and maybe grab a bumper sticker or two while you're there. We need to spread the word!
(And if you're one of those people who sits merrily in the left-lane with an empty lane to your right--at any speed--MOVE OVER. WE'RE NOT FLASHING OUR LIGHTS BECAUSE WE THINK IT LOOKS PRETTY.)