With Google AdSense you can earn money by putting ads on your website. There are many options, now including YouTube videos. You can find more information about AdSense here:
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If you're interested in advertising on Google using their AdWords program (the other side of AdSense), then you can get more information here:
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<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
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