you're receiving 200 articles a day? you may want to explain this further.
I would spend the $5 and do a random check to get an idea of the article quality or you can Google random sentences in quotes.The copyscape is not free.do you know any free service?
I've been wanting to do an experiment with a site as article bait. Let them post garbage articles, most likely as part of multi-tiered campaigns, and they will start to get links from the higher tiers. Then after a couple weeks redirect pages to higher quality articles and benefit from the free links.
Just pmed youI'm probably responsible for many of those. PM me your URL if you don't mind, I'm interested to see if your site is in my database already.