I don't think it was the use of the name that got the person upset, I think it as the relation between the two. It's one thing to see a porno starring someone that shared your name (actually, I would find it funny if it were me... but don't any of you try it) but to see an old classmate doing porn using your name, especially if they were someone who you didn't like or didn't like you, I mean, that is a bit much.