>Maybe I am weird, but I never see the Facebook page of companies.
I may be reaching too far here but maybe it is your adblocker? A lot of times companies use the "facebook page integration" thing in their websites which I think most adblockers (including mine) filter out.
What's the difference between HN and Reddit's thread structure? Both are threaded. And I actually prefer the lines besides the comments, makes the discussion easier to follow.