[No idea whether anyone is actually still reading this...]
So far as I can tell, there is no facility for commenting here on linkposts. That is, a linkpost really is just a link; if you click on the "comments" icon you get taken to the far end of the link; there's no expectation, and no possibility, of discussion here on LW.
I guess that's a deliberate decision. (The idea being, perhaps, to avoid fragmenting discussion of any given thing, and if LW2 takes off to avoid sucking oxygen from other people's blogs.) Maybe it's a good one. But (to me, at present) it's not obvious. It's not even obvious that everywhere we might want linkposts from has usable comment/discussion facilities. (E.g., Eliezer Yudkowsky posts a lot on Facebook; perhaps there will be linkposts to his Facebook posts; but Facebook discussion is only available for people with Facebook accounts, and some LW people deliberately don't have those and others who do may prefer to keep FB for social use. More generally, a link can go absolutely anywhere and plenty of interesting pages on the web don't have comments.)
My own intuition goes the opposite way from the decision that's been made here: my guess is that it would be better if LW did provide for discussion of content from linkposts. Has this already been discussed to death somewhere? If not, is it worth revisiting?
I thought that instead of everyone having to create a separate post for their first impressions, it would be more convenient to create a single post for this discussion. I'll post my own here soon.