That is a really interesting article -- as a citizen of both the US and the UK, I sometimes fear I am doomed to a life of always missing the one I am not currently in. I very much agree with the section of the article that discusses how the web can exacerbate homesickness -- for me, it is an open window into a parallel life and it is so tempting to want to climb through. I also find that homesickness goes away when things are going well in the country where you are living, but it can flare up when something goes wrong.