Collaborative Blogs in the Yahoo! Directory

Fark [read review]
User submitted news stories from different sources, humorously retitled and open to feedback by others.
www.fark.com
Metafilter
Community blog to which anyone can contribute a link or comment.
www.metafilter.com
Plastic [read review]
Chime in with your views on the latest in pop culture and news.
www.plastic.com
memepool
Blog from multiple submitters, archived by date and by subject.
www.memepool.com
Halfbakery [read review]
Whatever you can think of. Submit a half-baked idea that you've had and other users will chime in with their thoughts and ideas.
www.halfbakery.com
Huffington Post, The@
dir.yahoo.com/.../Huffington__Arianna/Huffington_Post__The
Crooked Timber
Group blog with an academic bent.
www.crookedtimber.org
OhmyNews International
Citizen journalism international blog with news and articles about science and technology, arts, entertainment, and sports written by regular people.
english.ohmynews.com
Becker-Posner Blog, The
Collaborative blog by Nobel Prize-winning economist Gary Becker and federal circuit judge and author Richard Posner.
www.becker-posner-blog.com
Red State
Republican community blog.
www.redstate.org
Ask MetaFilter
Discussion area for sharing knowledge among members of MetaFilter.
ask.metafilter.com
Blogcritics
News and reviews of music, books, film, and popular culture by a sinister cabal of superior bloggers.
www.blogcritics.org
Metroblogging.com [read review]
Urbanites provide a look into daily life in the big city. Cities include New York City, San Francisco, Los Angeles, Boston, London, and more.
www.metroblogging.com
Chicagoist
All about the Windy City.
www.chicagoist.com
videos.antville.org
Blog where users can sign up and post links to cool music videos around the Web.
videos.antville.org
everlasting blort
Collection of odd and humorous links.
blort.meepzorp.com
unmediated
Group blog that tracks the tools, processes, and ideas being used to decentralize media production and distribution.
www.unmediated.org
WoW Insider
Blog dedicated to the rich and addicting universe of World of Warcraft. Posts include how-tos, tips and tricks, patch updates, and more.
www.wowinsider.com
Blog Sisters
A loosely affiliated group of female bloggers.
blogsisters.blogspot.com
blogTO
Collaborative blog about Toronto, Ontario, written by a range of contributors including "obsessed" artists, musicians, dancers, tech geeks, foodies, politicos, fashionistas, and photographers.
www.blogto.com