Yes...you can...article marketing is still great nowadays...just do it....but make sure your article is well written article... besides that...article also will act as natural backlinks to your website....
Yeah, don't worry about this. This is a common myth that has circulated around the internet and there is absolutely no truth behind it. Unfortunately, there are many people who don't understand the way things work and instead of trying to learn or do their own experiments they just keep spreading the same rehashed misconceptions. You could do some searches on the term "duplicate content penalty" and you will probably find a lot of information on the subject. This is something that has been discussed frequently over the last year. The general concession is that the "penalty", as conceived by the majority, is completely false. What most people referred to as "duplicate content" is more accurately described as syndicated content (which is what you are referring to), and there is absolutely nothing wrong with it. If you have doubts, I suggest doing your own research and drawing your own conclusion.
article marketing will give natural backlink to your site.....but it is better if you can publish your unique article rather than use duplicate article.....