I imagine some people perhaps prowl 'new' and mostly do ground-level comments on stories with very few or no comments; others favour stories with already many c

I imagine some people perhaps prowl 'new' and mostly do ground-level comments on stories with very few or no comments; others favour stories with already many comments and leave 4th or 5th level comments mostly, as on pages with hundreds of comments, most are at that height or higher. Early commenters vs late commenters.