Netscape by Jason Calacanis, the media coverage increases as it approaches to the launch time.
update: I haven’t used DIGG at least consciously in the past and so I have no idea if they are copying DIGG. But it seems like fun. Here is my profile: http://www.beta.netscape.com/member/kenjimori
The discussion goes on there: “AOL copies DIGG”
BL Ochman provides an excellent analysis.
A VS’s Fred Wilson.
Even more inspiring by Jason himself.