Well, fiddle-dee-dee! I may be rich someday! Just checked and through the end of February 2008, I've earned $1.74 on Squidoo!
I also have $.50 sitting in my Constant Content account. Hmmm. Time to post more articles.
I haven't posted anything new on Associated Content since June, but I make a steady $20 per month. My most popular article? Check it out.
Here's another site to try: Demand Studios. They send assignments out in groups of 10. 10 articles for $150. They pay via PayPal, and get good reviews from folks at Associated Content.