Here's a detailed explaination of how the ranking system works,
for those interested.
http://www.fifa.com/en/mens/statistics/rank/procedures/0,2540,3,00.html
Anyway i read it in some reports before this year's WC on the
reason why teams like Mexico and USA are always in the top 4 or 5
regularly.
That's because their continental competition (CONCAAF championship)
occurs once every 2 yrs, as compared to Europe and South America
which is held once every 4 yrs. And the fifa ranking points weighs
more in important matches, such as continental competitions and the
qualifiers.
