Top 10 most powerful people in the world

Who are the 10 most powerful people in the plans? Here's their list according to Forbes magazine:
1.Barack ObamaUS president
2.Vladimir Putin  prime minister of Russia
3.Hu Jintao President of China
4.Angela Merkel prime minister of Germany
5.Bill Gates Founder of Microsoft corp
6.Abdullah bin Abdul Aziz Al Saud King of Saudi Arabia
7.Pope benedict XVI
8.Ben Bernanke Chairman of the State Treasury, Sh.BA
9.Mark Zuckerberg Facebook Founder
10.David Cameron Prime Minister of England