Although this might sound like a ridiculously simple concept I am consistently shocked by the lack of people who can actually run properly on a treadmill (or any ground for that matter).
From a veteran here are my top pieces of advice for ideal treadmill running:
The first piece of advice I have for you my fellow thumper is to land softly. Unless you're running at a 15.0 the treadmill should not be shaking from your impact. The more core you use the softer you will sound. I try to imagine floating while running and that helped me land a little lighter. In the long run you will save your joints and in the short run you will have more friends in the gym.
Pick up your Feet
ARhaghaha sorry. Yesterday I was running beside a guy who scuffed his toes every single step. This drives me CRAZY. You're being lazy and you're slowing yourself down. Put that extra 2% in and get your foot off the ground.
I don't love this all the time but every now and then it's a good idea to run beside and in front of a mirror to check your form. Are your shoulders relaxed? Are your arms moving in a lateral motion or are they crossing all over you? There's lots to learn by looking at yourself.
One over Rule
There's something about parking spots and treadmills that just seem to magnetize people to each other. If there are 22 open treadmills someone is bound to end up on the one right next to mine (and probably yours too). It's not that I don't like you I'm just sprinting at full tilt right now so I'll talk to you later. The polite thing to do if there is room is to move over one treadmill and for goodness sake keep your eyes on your own machine. If you really want to know you can always check their history after they get off … not that I've ever done that …