how to make money with google adsense.

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i have just realised that google has added a new feature to their programs. this is picassa and pack. but the problem is that they are not available to all countries and they also use adsense. that is if you have an adsense account then you can get to earn through this two. they say that if someone downloads the two through your link you earn. is it true and how much do you earn and are they available to all? please help.