PrintNPost
At PrintNPost, you create articles, Google places ads, and you earn whenever someone clicks on ads. on your pages; as well, advertisers may bid to appear on a CPM basis. Both CPC and CPM compete in the AdWords program so that your ad revenue is optimized. You can also boost earnings by doing the usual linking to your articles.
Triond
You submit original articles and earn on advertising that is placed on your pages. Triond provides a large number of bookmarking sites. You receive monthly revenue and, if you submit on a regular basis, can grow a smaller side-line income.
Helium
Helium works much the same way, offering bookmarking buttons and an About Me page where you can include 3 links to your other sites. Additional advantages are offered via contests and through the Helium Marketplace, which matches publishers and authors. You earn revenue on your articles
Suite 101
If you are a published writer, You can join the Suite 101 network and receive a direct share of ad revenue. You can write for approximately 400 topics and 3000 categories. If you can produce at least 10 articles over 3 months, this may be a good fit for you. You also receive editorial review and gain access to comprehensive tutorials on writing for the Web.