> the URL is an imperfect proxy for the article I find this part important but misleading. The URL is a fine way to identify the article, but it's important to

> the URL is an imperfect proxy for the article I find this part important but misleading. The URL is a fine way to identify the article, but it's important to separately identify and link to the multiple discussions that can be had about any given article. For example, an article URL doesn't unambiguously identify a HN discussion as the same URL is submitted and discussed multiple times. Rather, this may be the gist of OP: Because we post URLs without top-level commentary here, the HN discussion (and HN URL) isn't a single, meaningful conversation either. Only when we get to each top-level comment (identified by the comment URL), we have conversations that it may make sense to highlight.