So you are adding endless-scroll? One of the Web UI things that the HN community regularly complain about on other sites?
Please make it optional. :)
Not necessarily. I seem to remember that HN used to be without pagination, all the comments were just listed on one page (without any JS to load more comments etc) but servers started to struggle when HN got more users which led to sometimes too many comments, so they added the pagination.
Somehow I associate this with the thread when Steve Jobs died, but not sure how accurate that is. My memory is kind of sucky.
See also: isomorphic, real-time, serverless and countless others examples of poorly named concepts in web development.