We've decided to publish (with the author's permission) reactions that we received about our section on Anti-American Sentiment Among Nationals of Other Countries. We feel that these commentaries serve considerably to further and better inform it.
I think that we all have our own, set ideas about Americans, which are usually negative (whether born out of recent political events or—more likely, in my view—out of jealousy/insecurity). Americans do tend to come across as terribly naive and parochial, so I think that it's a good thing to explain the reasons behind this.
Educated Brits are far more outward looking, because of our history and geography, which can make us horribly smug when taking the piss out of "Dumb Yanks". When I lived in Hong Kong, one flatmate was from Boston; we never missed a chance to rag him about his ignorance of the rest of the world, but the fact was, he was a great guy. If non-Americans can be brought to understand why Americans don't share our world view, I think that this could make life a lot more comfortable for everyone.
Frankly, I would have added some advice to Americans to be a little more thick-skinned: I knew an engineer, here, who was a fantastic bloke (when sober) and who had learned—off his own bat—to speak pretty fluent Chinese, yet whenever anyone made a crack about the US, he would react like a little kid, going into a sulk. We Brits can't understand this, as we have been hated by various peoples for several centuries, so we take it as a given, when travelling. I would also advise them to be aware that some of their behaviour is often seen as very arrogant, when they are not, in fact, being so (this is also very much an English problem, particularly among the middle classes: I am constantly being told that I am arrogant, when I am merely doing what I believe to be right. I am also very forthright in my opinions, which doesn't always sit well with the Chinese).
Given the nature of the website—and, therefore, the kind of people who will be reading it—I think that such advice as you have given is perfectly appropriate. It fits in well with other sections of the site, such as Chinese women and marriage: Honest, sensible and well-intentioned.