Ok, now it's getting confusing. I decided to use 1.6 because I thought 2.0 was still in some kind of beta version and was still buggy.
Yes, this is a little paradoxal : SFML 2.0 RC is not the "stable" version yet but is already less buggy than 1.6, it's the release candidate which means nothing will change in the API until the 2.0 stable version.
Is there anything that I should change in that tutorial to make it work on my Mac too? (Considering that I'm using Mac OS X)
So you have to do one thing before following this tutorial : install SFML for Mac with the installer. Then you have to use
/usr/local/include and
/usr/local/lib for the search directories. Also you can't use the static version as it doesn't exist on Mac. That's should do the trick.
Let me know if you still have some issues.