i am not sure it works for long time, i just launched a site grabbing content from various sources, news magazines and so...got the pages indexed soo quickly. I was amazed to see the traffic rising from 500 visitors a day to 4000. Few days after this pic, i just saw all my pages listed at the complete end in google results, and now i see my pages desindexed from google.
I was so surprised that happens because i have noticed some sites using automatic content for quite a while and still have a page rank.
I have launched this on a subdomain. So perhaps i was flagged because my main domain, was growing at normal pace (writing the articles by myself) werheas my subdomain was growing so fat. I am trying to do this on separate domain and i'll see what happens.