There's two purposes to article marketing, and I don't see a whole lot written about this on the internet marketing websites, but it's something that I have found that really works for me.
There's two purposes for article marketing.
One purpose it to build back-links: if we're going to build back-links, then we want to write multiple articles and we want to submit those articles to multiple directories.
The second purpose to article marketing is to create direct traffic--and if we're going to create direct traffic then we want to create a large number of articles and submit those article to a very small number of article directories--typically the first three or four article directories.
That's the second purpose, is to drive immediate traffic..
The question about duplicate content-- we debate that a lot.
What I have found, currently, is that if I am currently submitting articles to multiple directories--a lot of the directories have things that they do with their individual pages, that prevent those articles from necessarily showing up as duplicate content--there's a lot of information out there right now that indicates that we can change those articles up some.
Again we get into the re-writing thing.
What I am doing right now, what I continue to recommend, is that if you're looking for multiple links you can continue to submit one article to multiple directories--now, if you submit one article to let's say a hundred or a hundred and fifty directories, you're not going to get a hundred and fifty back-links out of it.
You are going to get back-links from the websites that are able to catch your content with search engines, that are able to catch you're content earlier than others.
The key here is your links: it's not what the article looks like.
And then, again, we'll go back to point number two--the purpose.
In terms of just driving traffic, that's when you're really going to want to write a good bio.