Person B: You just think that because you’re a stupid tree-hugger.
Person A: It is crucial that we facilitate adequate means to prevent degradation that would jeopardize the project.
Person B: You think that just because you use big words makes you sound smart? Shut up you loser; you don't know what you're talking about.
Atheist: "You're a Christian! In my world-view, you're all dumb! Therefore what you said isn't true!"
Christian: "Even though I provided citations and reliable sources? Nice ad hominem you've got going there you atheist idiot."
Now meaning Argument against what a person has posted via the net and brought about by Psychological projection as to the person hidden behind the Computer Screen and On-line Identity.
Can also be seen as an idiotic lack of appreciation of Netiquette and also gross self absorption by the reader/responder.