I don't know if they're leaving or not (although probably plenty moved on ... many of us used to use Slashdot, digg, reddit etc) but at the least they're going

I don't know if they're leaving or not (although probably plenty moved on ... many of us used to use Slashdot, digg, reddit etc) but at the least they're going to be heavily outnumbered - these days HN is a big, popular site with and a highly desirable source of traffic.