I have the feeling that creating a new domain is going to be a way of growth hacking one's story toward the HN front page. Green is a big bump in a world of greys.
Fluff tends to get flagged off the front page pretty quickly, so it may not turn out to be a problem. But if that does start to happen, please let us know. We can turn it off, or maybe turn it off on the front page. I'm surprised that the green sites turned out to be controversial because I have found them helpful as a moderator and a reader, but in retrospect I can see why a visually noticeable change would be. We'r…
I'm not being controversial, though now that I think about it, there is a shift in the semantics of the color: it used to be reserved exclusively for people, now it is also being used for "things". That may account for some of the undercurrent for resistance to change.
I can see why it is helpful for moderation. I guess the real question is does the green spike the level of participation in moderation activities? As a reader, it doesn't really highlight the sort of information that I make my decisions on.