Not that they don’t attract plenty of skeptical, sarcastic responses. One man identifying himself as an Arab in Germany commented that they were trying to put lipstick on a pig. During Congressional testimony last week by Gen. David H. Petraeus, for example, the two-man team went into chat rooms to ask people their opinion.

Image A page from the Web site Arabs Gate, one of the sites where a State Department blog team has contributed to the debate.

“God bless America, the giving mother,” went one sarcastic response, going on to say that everything the United States does goes into “the balance of your pockets, I mean the balance of your rewards.” Another noted that Iraqis were better off before the invasion, while a third jokingly asked the Digital Outreach Team for a green card.

Mr. Jawad’s responses tend toward the earnest: “We do not deny that the situation in Iraq is difficult, but we are achieving success in decreasing the level of violence there with the contribution of the Iraqis who care about their nation and who reject the terrorists and killers who target their victims based on sect,” he wrote at one point. He directed the green card writer to the Web sites describing how to apply.

Mr. Jawad and his colleague, Muath al-Sufi, are circumspect about biographical details that would allow readers to pigeonhole them by their roots, religion or education. Mr. Jawad, would only say that he is in his 30s, was born in Texas and raised around the Arab world. Mr. Sufi also said he was in his 30s.

The team said certain topics repeated regularly, including arguments over the accusations that American soldiers tortured Iraqis at Abu Ghraib and President Bush’s comment that the fight against terrorism is a “crusade.” Much time is also spent trying to douse the Internet brush fires that erupt whenever prominent Americans from talk-show hosts to politicians make anti-Muslim remarks of the “bomb Mecca” variety.

Each response is carefully shaped in English by the team and translated into often poetic Arabic.

“We try to put ourselves in the mindset of someone receiving the message,” said Duncan MacInnes, the director of the Counterterrorism Communication Center, of which the Digital Outreach Team is one branch. “Freedom for an Arab doesn’t necessarily have the same meaning it has for an American. Honor does. So we might say terrorism is dishonorable, which resonates more.”