Casually maybe once a day. No tabs. Two or three separate windows: one for the lists of 30 items — no scrolling, one for the comments on the item, and maybe one to open the article depending on the comments or if the title sparks my interest. I up vote good comments and good articles that I read in full and post an article if someone hasn't already. I've started using HN Angolia more often.

Consumption in moderation.

I am in the world only for the purpose of composing. — Franz Schubert