NZQuilter - you have a very valid point. I've made most of my quilts by looking at a picture and figuring it out. Most of the time, the main reason I purchase a pattern is because I don't want to take the time to figure it out myself, not because I can't. And most of the time even if I buy a pattern, I end up not following it because I have other methods I prefer to use to make the units.
If I know the designer, I'll give credit when I share pictures, even if I didn't buy the pattern.