There are some blogs and sites that have blocked pinning, so I don't worry too much about it. And I'm one of those who are flattered if I find something of mine pinned. I once ran across a tutorial I made a couple of years ago, and was quite flattered because the pinner said she finally got it (the technique). On the other hand, I do have one quilt that I don't want copied yet, so I have purposefully not posted pictures of it anywhere.