Xomba provides very useful combination of the articles submission and extended bookmarking. All your content is equipped with AdSense ads, where you get your share of the revenues.
I joined the site just last week, but I already see the traffic stream through this channel.

Update: With very good idea and its realization, Xomba did not supply the revenue stream I expected. Rating decreased from 5 to 4.

Xomba is a fun site that lets you write articles, blurbs, and blog like entries for a share of the revenue. They share 50% of the Google Adsense, have good traffic, and are relatively well organized. Their site is a little hard to use as a reader, but very easy to use as a writer.

Out of this list, Xomba is the best revenue sharing website in my opinion. With Xomba, you can write about anything and edit your writings for years to come. In addition, you can be notified when somebody comments on your posts OR if somebody comments on an article you're following.