I was listing stuff that made me a bit scared, as I browsed the source, not stuff to criticize the website with. As for criticism: I think the design and social integration is fresh and well executed. I make websites that contain more errors and look worse than that. It is more of a web application, than a web site.
I listed MicroFormats, because: As a foundation for a modern website, it is a great idea. Digg has the traffic and authority to make rich mark-up work. And I think adding stuff like rel="me" to your social profile-links is kind of standard.
It was certainly not a prioritized list of what to work on next. That would likely be more like: Deploy descriptive 404 page, Get old content redirected to new location, Comment functionality, non-Facebook log-in option, categories, option for a non-masonry list view, work on page speed.
