I think its Arc: <a href="http://en.wikipedia.org/wiki/Arc_(programming_language)" rel="nofollow">http://en.wikipedia.org/wiki/Arc_(programming_language)</a><p>"The site was created by Paul Graham in February 2007. Initially it was called Startup News or occasionally News.YC. On August 14, 2007 it became known by its current name.[2] It developed as a project of his company Y Combinator, functioning as a real-world application of the Arc programming language which Graham co-developed."
-- <a href="http://en.wikipedia.org/wiki/Hacker_News" rel="nofollow">http://en.wikipedia.org/wiki/Hacker_News</a>