QUOTE(iconoclasticANA @ Jul 9 2013, 02:08 PM)
Google doesn't penalize you if you have an article published on multiple websites. It's called article syndication. What Google does penalize is having the same article, published multiple times on the same website. The reason is that Google thinks you want to attract traffic for two identical/similar webpages, and trying to occupy more spots on the SERPs than one.
If you copy exactly an article from other site to your own site. Your post with this article can not rank for a long time (just few days if you have some special techniques then disappear forever)
For the topic's question: If you have one article and want to post to multiple sites, you can use spin softwares such as The Best Spinner, ChimpRewriter, Article Rewriter or WordAI