While I agree completely with your indignation at their actions... if you really wanna know what I think...
It makes you look like an ass.
There, I said it.
Not that I think you care what the infringing party's opinion of you is, and neither would I, but you're looking like as much of an ass to those linking partners you are cc-ing in.
You ever see that Will Smith movie, Hancock? Same guy doing the same good deeds one end of the movie to the other, with vastly different public perception. It's all in the delivery, baby.