This, this, this, and this!!!
My mother is the one that takes the initiative of taking pictures of people during events (whether important or just small outings). What she has a hard time understanding is that you must spam the trigger. She tries to frame the picture perfectly, and everyone on their most photogenic faces. Then, she takes ONE shot and oh... somebody closed their eyes a bit. "Let's go for another one, everyone go back in place!"
What she doesn't understand is that the best and most memorable pictures isn't the one where people are smiling straight into the camera. It's when people are doing something they enjoy and don't even notice the camera and don't do a perfect model pose.
I'm lucky if I delete only 9 of the 10 photos I took!