FIFA rankings

What do you think about FIFA rankings? personally I do not think they are very accurate, there are some teams that I think should be on top and are not and there are also teams that I do not think should be on top but are. I think most South American teams should be on the top 20's along with European teams, and then all the other tams. http://www.fifa.com/es/mens/statistics/index/0,2548,All-Apr-2005,00.html here is a link to the rankings, take a look and tell me what you think about them.