One more quick follow up to this - if you post the article on your blog AND on a ton of article sites it *can* devalue the overall return of your blog - so I guess the point is to try to post fresh content to your blog/site and post the same articles sparingly on the BEST article sites. (If you're concerned about search returns/
SEO).
Ultimately though, I'm assuming the idea of posting your articles is to share information and establish yourself as an expert - rather than compete in
SEO for keywords - which should be the main purpose behind articles anyway.
Just like a blog can be a great
SEO enhancement,
SEO shouldn't be the motivating factor behind running one - it doesn't bode well for increased readership and longevity...same goes for articles.