That's an interesting response. It seems to me that the flame level on this site is quite low in response to somewhere like Reddit. People argue here, of course, but usually it's in an informational sort of way and rarely devolves into "yer momma is soooo fat...." kind of discourse.
Discussion on hn is higher quality. I'm an almost original slashdot reader, user id is 4 digits. I haven't browsed there in perhaps years at this point.
It's been at least a decade or more since I have been on /. . It really seemed to have went down hill when the Bush election was going on, they did a lot of political coverage and it just ruined the feel of the site. People started exposing their political bent and the site in general just became more snarky.