Their argument is that commentary on the original Digg was essentially the first of its kind, whereas commentary happens "everywhere" and they need to spend time aggregating commentary too. Not sure how they can do this effectively, but will appear over the next few releases.

Honestly, it's like releasing a car without wheels. Comments are the bread and butter of social news sites. I'm shocked and horrified that they omitted comments. It's a glorified Pinterest at the moment.

I'm really disappointed - I really hoped they had learned some lessons.

Comments are where community forms.

Without community, you have nothing but a shiny, editor-controlled front page. Congrats, CNN 2.0 (No wait, even CNN allows comments...)