There are no rules in blah blah except

[Matt. K]

When you run out of creative ideas you turn the camera at an angle of 45 degrees to make the image look trendy/pop magazine style.
Please post no examples.

[Greg B]

It works best when you are 12 y.o., and are shooting square film.

[Matt. K]

It's most popular with young things who have just graduated from art school. I bash it out of them.

[Onyx]

I personally hate this "shot at an angle" style, but I did try it out once. I was in some museum I can't remember, in NYC - taking a picture of a painting. It was a square picture, depicting a diamond inside a square with a diamond in it. It turned out quite well.