Can we discuss "This."?
Maybe it's a very silly thing to be bothered by, but I can't be the only one agitated when I read a response to anything that begins simply with "This."
It's my personal feeling is that "This." is a sign of the decline of intelligent discourse on HN. I feel like "This." is usually karma fishing, and that their comment more than likely adds nothing to the discourse, and is often a predictor of immaturity.
I'd like to know what everyone else thinks.
However, pretty much all dialectic and idiomatic shifts look stupid to those entrenched in the existing "standards" and not part of the current "in-crowd." Language changes, and as it does so it leaves behind the previous generation. Perhaps this will flourish briefly and then die out. Perhaps it will return every 10 years or so, possibly even become mundane rather than regarded by some as "cool" and others as, well, juvenile.
Personally, I think that saying "This" looks stupid, but it succinctly expresses the sentiment of the one who writes it. I certainly think it's less stupid than saying "I could care less" when one means that one doesn't care at all. Even saying "meh" would be more acceptable than that illogical expletive.
But in the end this is unhelpful. The language used here will reflect the norms of the population. You can try a King Canute and stand against the tide, but you can't win.