Associated Content pays about $5 to $7 per article, or more or less, depending on the quality. You will also make money for ad revenue (e.g. page clicks). Helium does not offer upfront payments, but does pay for page views. They also have a section on the website called Marketplace, where you can submit articles that publishers are looking for and there is a possibility (but no guarantee) that you will “win.” Helium also requires you to have $25 before you can cash out. Associated Content pays you for each article, there is no limit that you need to meet. Through my experiences? Associated Content is MUCH better than Helium.