I have 2 articles still waiting for review at ArticleBiz, posted 13 May and 17 May. They now say it will take up to 6 weeks for a review, (upgraded from 4 weeks). Well, the 6 weeks is up tomorrow - I'm not hopeful they will publish and well outside the 30 day limit for Cash4Links.
Of course, If I pay them $1.00 per article, (minimum credit purchase is $10.00), they say they will review within 48 hours.
I've used these 2 articles as a test of their free service. If they do not publish within the 6 weeks promised, I shall then pay them the $10.00 to see what that service is like. However, I think I shall be spending most of my time on the sites that do not require payment. 
UPDATE:
Well, still waiting for my articles to be published - it's now 7 weeks.
Also, I was just about to try their paid service and noticed a contradiction on their site. They state:
You may expedite the review process by buying article credits. Each article credit cost as little as $1.00. You may use 1 credit per article.
In other words, $1.00 per article.
However, when you move down the page to pay, the minimum you can buy is 5 credits for $10.00. In other words, 1 credit per article = $2.00 per article!
I've given up on ArticleBiz - I'm not paying $2.00 per article and I'm beginning to suspect that they don't publish your articles hoping you will get fed up and pay.
Has anyone managed to get articles published for free? I shall leave my two articles in their system just to see if they ever publish them.