I think one of the issues at Reddit was that if you said thanks to someone or thought they had a good idea, it was bad reddiquette. Here that culture isn't as prevalent and I it adds to the pleasantness. Maybe encourage meaningful thank yous or I agrees while adding on why you're saying thank you or I agree instead of "K" or "same." But don't shit on people that do that in the future.
edit: really bad grammar fix, still not sure. lol.