I have finally reached the 300 article mark. It would have been sooner, but I had some removed, and other things came up. I feel it is a great milestone. Only about 70 of the articles have been published for 3 months or more, so I should see an increase in my earnings when the articles reach there 3 month point. Most people say it takes at least three months for your articles to mature.
My next goal is 400 by the end of January, and 1000 by the end of 2010!