I am giving Yuwie the highest rating not because of its high revenue generating abilities. It is very low, unless you have a long downlone of referrals (10 levels deep). Yuwie uses it's own revenue scheme, so you do not need to sign for AdSense to get your share. I give Yuwie the highest ranking because of very good and customizable user interface, ability to find friends and promote your programs. This All-in-One site should be;considered seriousely.

Update: Too much of noise and ads, too low of content, communication, and income. Downgraded from 5 to 3.

This is a social networking site that doesn't have much to offer. The goal has to be lots of page views for you, but also for your referrals. You need a lot of referrals in order to make a few cents. The earning potential for the average user is a few cents a month.

Yuwie is a relatively new community which prevents me from giving it a 5 rating. I am always hesitant about new social networking communities because more often than not there are some programming issues.
I have not reached payout from Yuwie yet but have been told by reliable sources that they have received payment from Yuwie.
In order to reach payout quickly on Yuwie you would need to recruit new members, add content to your profile page and browse other profile pages.
Yuwie certainly promises to be a great money making opportunity if social networking is your forte!