The Mess
Iraq Today—A genuinely remarkable daily roundup of news stories about developments in Iraq, with digests of (and links to) major analytical articles as well as breaking news from sources around the world. Iraq Today puts together the detailed picture people in this country have been denied by the administration and the mainstream media.
http://warnewstoday.blogspot.com/

Iraq Coalition Casualties—Constantly updated, this site reports the number of US and "Coalition" forces killed and wounded in Iraq.
http://icasualties.org/oif/

The Cost of War—This site has a counter ringing up the cost of the Iraq war so far in real time (over $400 million and counting). It also shows the effect on your area and what that money could have done if applied to education or health.
http://costofwar.com/

Getting into the Mess
Iraq Timeline—This is a useful overview of how things have gone from bad to worse since March 19, 2003.
http://thinkprogress.org/iraq-timeline

Getting out of the Mess
Iraq Veterans Against the War—Started in 2004 with 8 members, this important organization has stepped to the forefront of organizing to stop the war fighting to see that the men and women returning from it get the care that they need when they get back.
http://www.ivaw.org/

The Appeal For Redress—More than 2000 active duty troops have signed this appeal to their elected officials, an activity protected by the Constitution and Defense Department regulations, The simple statement ends "It is time for US troops to come home."
http://www.appealforredress.org/

Military Families Speak Out— MFSO unites people opposed to the war in Iraq who have relatives or loved ones in the military. Formed by two families in November of 2002, it has contacts with military families stationed throughout the US and around the world. Over 3,000 military families belong, with new families joining daily.
http://www.mfso.org/

Special Mention
Out Of Iraq Bloggers Caucus—This is a fascinating effort to harness the power of the internet and the web. Two dozen significant bloggers have created a means of spreading the word and providing mutual support. The OOIBC site and the linked blogs of individual Caucus members provide sharp analysis and passionate arguments about the war, frequently focused on the role of the mainstream media and Congress.
http://ooibc.blogspot.com