The writer of this referred article is obviously a fear monger employed in a small time magazine who is trying to get noticed (perhaps you should send an application to Fox News, they are always hiring such people). Unfortunately there are people who are always looking for such poisonous material in the media junk and keep praying for the decline of the United States for their own selfish reasons. It is their agenda. What good can come out of this article? None. But they have to spread such fears to increase their own popularity.
You should look at the condition of your own country, Pakistan, which is spiraling downwards with increasing speed with issues such as poverty, corruption, illiteracy etc. What is going on there? If your country is US, then why would you spread such fear and hate as if judgement day is on horizon.
Capitalism encourages rewards for the hard working entrepreneurs and so far has proved to be best system we have. Socialism is a proven failure system, since its another name of corruption. Russia has collapsed, China has inducted capitalism in their financial system, Eastern Europe, East Berlin, North Korea have all failed in any financial achievements as is evident from history.
Therefore, it is only capitalism, which can recover from the bottom and not monarchies or socialism.
US is a continent and the biggest economy in the world so the problems wiill be bigger as well but it is not fragile. But the enterprising and entrepreneurial culture always overcomes problems in society. Capitalism displayed its survivability through the tough time of the 1930s and 1960s, and it will survive yet again. One only has to read better financial reports.
Please read better sources such as like the Economist, Newsweek, Time, Washington post, NY times, LA times, CNN, Wall St Journal etc. if you really want to learn the global and American situation and avoid posting such good-for-nothing penny media articles.