Is Rss aggregator considered duplicate content?

is having a site that collects articles from various

[abdobasha2004]

is having a site that collects articles from various specialized sites e.g.:sports considered having duplicate content
the articles are totally copied but with referring links to the author

[edited by: engine at 4:29 pm (utc) on May 6, 2009]
[edit reason] no specifics, thanks [/edit]

[bill]

We've had a number of threads asking about RSS being treated as duplicate content [google.com].

That content will be considered duplicate and in most cases it will be filtered from the SERPs. This isn't a penalty. It's just that you won't rank for someone else's syndicated content.