What are some great ways to make money on the internet?

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I am trying to find ways to make money on the internet. MyLot is great, but I have a few others as well. If your website is in the Alexa top 100,000, http://www.reviewme.com pays you to blog and review websites. Pay Per Post at http://payperpost.com/ is very similar. Also, if you have a website that isn't just blogging, Google Adsense pays you for searches on your site or clicks on contextual ads. What other online services make money and how good are they?