http://www.articles3000.com/
I just found this site - they offer a joomla (nuke) plugin which redistribute their content to your (joomla site)

I just wonder if somebody knows a script which just scrapes i.e. articlecity etc and redistribute the content to (your site) without aproving.

I like the idea of having an article directory but I can see there is too much work involved in approving all the articles
and if you allow instant approval you will invite all the nasty spammers LOL