Sorry, SD? The acronym is not clicking, would like to make sure I'm not missing a site with benefits similar to HN, even if it requires viewing a few half page ads. Thanks,
Slashdot.com - haven't checked it in years but was a similar tech focused site with above average comments, its heyday was late 90s-early 2000s iirc
Maybe it is Slashdot?
Sorry - yes Slashdot. It is awful nowadays, but I started there. Somebody should tell them.