http://www.2xy.org/ Well, it's all about being the world's most reliable source of unreliable news. Pure and simple.
http://boingboing.net/ is a publishing entity, first established as a magazine, later becoming a group blog.
http://gawker.com/ bills itself as "the source for daily Manhattan media news and gossip". It focuses on celebrities and the media industry.
http://www.guardian.co.uk/tone/blog the Guardian's blog on news, current events and journalism from around the web.