We have a few informational blog posts that are valuable to some readers. We have posted them in our blog but were contemplating posting them on 3rd party blogging websites such as Blogger, Squidoo, etc.. Ideally we would continue to maintain these accounts with multiple blog posts, but would all be reposts of the original blog. These are not half english blog posts just hoping to gain a better Google rank. They will provide value to the readers who might not be finding their way to our website directly. Is posting these blog posts on the 3rd party websites, linking back to the original article and maybe some products that are related to the specific document going to negatively affect our rankings due to the duplication of the content?