If you distribute the same exact article on 100's of sites, Google will pick one of them and throw the rest into the supplemental index because of the duplicate filter.
We found a way to distribute very different variations of the same core article to overcome this. As soon as we have the initial article ready, our writers make sure that each sentence in the article will have 3 to 10 different variations, after this, words that have synonyms receive them.
We use a special code when writing the articles this way and based on that code we are then able to generate 100's of very different versions. When we do the distribution, each site receives a different variation.
Please see the difference between these 2 articles:
Total One Way Links Created: 200 (Coming from 100 Different C class IP's)
Keyphrases used: 2
Cost - $100
Total One Way Links Created: 400 (Coming from 200 Different C class IP's)
Keyphrases used: 4
Cost - $180
Total One Way Links Created: 1000 (Coming from 300 Different C class IP's)
Keyphrases used: 5