While it's down, here's a list of mirrors of HN submissions
Site:
http://hn.premii.com/#/article/6640430
http://yahnr.com/
https://twitter.com/hackernewsbot
http://www.hckrnews.com/
http://ihackernews.com/
People's comments on HN going down, while it was going down: http://ihackernews.com/comments/6640210