I have memories of annoying developer no. 2 endlessly quoting Dave Winer's platitude about "sending away users to make them return." SBW (http://sbw.org) was right again.
Listen to your most annoying developers.
And as an aside, if we ban valleywag, shouldn't we ban ex-valleywag writers writing valleywag-like content?
I have never heard of "Shout" before reading this article.
I'm confused. How can Twitter be "invading" Digg? Didn't Kevin Rose invest in Twitter? If my memory serves me correctly, he mentions his investment in this video.
http://www.vimeo.com/3934635