Carsonified has a video and transcript of Fred Wilson’s 10 Golden Principles of Successful Web Apps:
"When you think about the New York Times versus the Wall Street Journal, or you think about Vanity Fair versus Vogue, or you think about Fox News versus CNN, each of these media companies have a voice. They have an attitude, and a style, and it’s unique. It’s different.
I think software has to feel that way. Your software has to have a personality. People have to feel like they’re consuming media when they consume your software. If your software is bland, and has no attitude, something as silly as the “Fail Whale” which became a symbol of Twitter’s inability to stay up, also was a personality."