Show some fucking respect.
Have some sense of humor.
The names should be protected at this stage. It's not clear whether they're doing something wrong or not
Or more importantly, its not clear if they are doing it knowingly, or just doesn't know they not in compliance with the license. If its the latter, a quick telling them that they might want to correct that one little mistake is better strategy than yelling out "OMFG, you violated the holy GPL, you burn in hell forever, kthxbye!"
However, if the dont care to answer what you point out or more specifically if they violates knowingly and doesnt give a rats ass about it, its up one level on the no more mister nice guy-scale.
Do we then start sending troops into nation X for downloading Disney movies?
I can just picture it before me!
I am expecting Go to stay and prosper.
So, what you're saying is that you dont think it will Go away?
You might have mail.