Barak Obama.

Barak Obama has become a very popular president of all the times.
The reason is clear and simple: for the first time in USA's history a black man has become the president.
During all the past months he was making discourses,trying to convince people to vote for him in the elections and not for his opponent J. McCane.
Being a black man is the most important reason which made him won the past presidential elections,because for the American people that meant an important change in their society and in their politics. That meant a more tolerable and open-minded America,and of course,economic crisis helped a lot to discredit their current political system. So, Obama managed to take an advantage of this situation and used the word `change´ as a slogan in profit of his electoral campaign.
Another reason,which is the most important too,is advertisements. He made a lot of propaganda in USA, and around the world,so people could think that he was the best president which America could ever have.
The reason is that he had more money than his opponent.That showed the world that who has a lot of money can win in any field.
In resume, even if almost everybody is convincd that Obama can bring positive changes to the world, I don't think so. I think he is just another president of the United States, without minding about his skin colour,who can do right or wrong things,or be best or worse than the past president. But we have to wait to see if he really can do somethinf in benefit of the entire world.