The latter point is exactly what I mean. I have had drivers behave badly, but I let it pass. My tolerance level for idiocy has gone up, and I would only be prepared to get cross if I actually got hurt. From the clips I see now and then, having a go at a driver who does something daft with no actual consequences can end up with a shouting match or worse. For me, I prefer to let it drop. I cannot change the world from atop my bike.
I agree, it's often counter productive to go and shout at a driver for the most part, and might be actually dangerous to ourselves, so I try not to engage with drivers then and there. [1]
That doesn't mean it's pointless to bring consequences to said driver afterwards, such as via YouTube and Roadsafe. Indeed, I think it's essential to bring to book those drivers who take dangerous chances on the roads around us. It's irrelevant that no injury was caused, because you want to nip that behaviour in the bud before it gets to the point of causing someone injury or death.
You can change the world, especially if enough similar people feel similarly and also take action. The combination of Roadsafe and video footage is having a tremendously powerful effect in London. Not doing anything guarantees that not only will things not improve, they'll get worse as the minority of bad drivers out there adapt to what they discover is acceptable driving behaviour.
[1] On the other hand, shouted-at drivers often do change their behaviour and know about their wrong-doing, and His Legbandageship has a different view on doing that to the two of us.
