comment sniping
the act of thanking someone who uploads content on the internet by leaving abusive comments, complaining that the content isn't presented in the way you'd like it to be presented.
Idiot: "Hey DICKHEAD, your upload SUCKS! You didn't even put a tag for white.cotton.panties.with.purple.hearts.on.the.front.but.not.on.the.back on it. People like you should be handed in to the NSA and SHOT at dawn!"
Uploader: (reports idiot for comment sniping)
Idiot: (can't reply because his ass got banned).
Uploader: (reports idiot for comment sniping)
Idiot: (can't reply because his ass got banned).