In this interview, Alexis Ohanian does talk about it a little, though specific reasons for the idea being rejected are not mentioned: <a href="http://mixergy.com/no-reddit-didnt-copy-digg-heres-how-it-was-built-with-alexis-ohanian/" rel="nofollow">http://mixergy.com/no-reddit-didnt-copy-digg-heres-how-it-wa...</a>