I'm waiting to make sure traffic crosswise is stopped/stopping before I go. And, I have a manual transmission car so I don't simply floor it and waste gas at every light racing to be the first to the next light. I NEVER text/cell and drive, but sometimes still one does distracting things at the safety of a stoplight that are necessary for the trip one is taking (rather than doing them while driving)--like changing radio stations or climate controls.
Cloudrider, this is a good question, but please be tolerant rather than peeved or annoyed--of especially the person at the front of the light. They have to make sure the way is clear before they can go. Sometimes the angle of the light makes it difficult to see, also, depending on the sun.
And, yesterday, I took the opportunity at a long light to make sure that my elderly step-mother was still buckled in safely at a stoplight (she's known for 'accidentally' taking off her seatbelt), and was honked at for it but I make no apologies (there was no convenient place to stop, and I didn't want to offend her dignity, either, by letting her know what I was really fumbling in the backseat about for 2 seconds). Being only a second slow on the uptake, all cars got through the light on time, by the way.
Usually I'm just careful to make sure that cross traffic has stopped or is definitely going to stop, not wanting an accident. Lots of people run red/yellow lights (I call those "orange" lights) where I live, heedless of the consequences.