This website is a collection of the writing and photography of an E4 in Iraq with the 2nd Armored Cav. It details his experiences and thoughts on the war. I found it very informative, and it kind of put some of the letters I've gotten from my buddies into a new perspective (you could say they aren't as good at explaining things as this soldier is ).
WARNING: There are adult situations described here, and a fair amount of cursing.