>>I'm trying to understand how the political system of the US work and I need your help to clear the things up.
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>>For comparison, here in Canada, the political leader of a party is choosen by the (paying) members of the party. We don't vote for a delegate, we vote directly for the leader of our choice. As I understood it, in the US you vote for a delegate that will vote for you. Why is this? Why can't you vote directly for Clinton, Obama or McCain for exemple?
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>We have an very aniquated system called the 'Electoral College' which was created because our founding fathers did not trust the 'everyday man' to be able to make informed choices in elections, given the size of the country and lack of communication.

This is inaccurate. The Electoral College and bi-cameral legislature were designed to prevent the interests of the smaller states from being swamped by the more populous ones. It had nothing to do with not trusting the masses.

That was reflected by the Electors being appointed by the state legislatures. It was used by more than half of the states in 1792 and 1800 and exactly half of the states in 1812. One of the reasons that most United States history textbooks don't start reporting the popular vote until the election of 1824 is because more than a quarter of all the states used legislative choice in previous elections, so there was no popular vote in those states. Even in 1824, when Andrew Jackson famously accused Adams and Clay of a corrupt bargain because he lost in spite of having pluralities of both the popular and electoral votes, a full quarter of the states (6 of 24) had the state legislatures choose their electors. By the following election, only Delaware and South Carolina continued to use legislative choice, and Delaware dropped out the following election. South Carolina held on to legislative choice until it became the first state to secede in December 1860.