Yes - but generally only on HN due to the quality of the comments. If I was to do it at reddit or digg, it is purely for humour value.
I found Reddit's programming significantly more technical than HN, with most people talking from experience instead of guessing. Compare recent discussions on the same technical story on HN vs. Reddit.
Also HN gets to me because it harder to find reasonable arguments with completely opposed views without massive up/down-votes [by the masses backing their side]. Reddit [discussions] [often have] opposed but very insightful comments together and both [have] hundreds of up-votes.
The traditional HN bashing of other sites lowers the discussion and actually it's very typical of, er, Digg/Reddit (pun.)