Hacker News is a Digg/Reddit-like site that I am visiting more and more often. It's my first stop in the morning, and I check it out a few times during the day as well.
Why? Because it's focused mostly on startup and hacking news, which is what we cover. It's one of the best places to find information on startups we haven't heard about yet. And, better, the community is jerk-free. Comments are mostly helpful, thoughtful and interesting.
Like Digg and Reddit, users submit stories to the site, and others can comment and vote on them. But Hacker News is also a forum of sorts, where users can simply post questions for others to answer - see this one asking for advice on creating a demo video for a new startup. Popular stories and questions move to the home page over time.
Hacker News used to be called Startup News and was launched in February 2007 by Y Combinator. They say "the most important goal of news.ycombinator was to create a place where founders and would-be founders can meet and talk."
Hopefully as the site continues to attract new users, the magic won't be lost.
Information provided by CrunchBase