The Google mantra has always been "original content." If a site has none, then they'll be passed over for the sites that do. If a site is made up exclusively or considerably of material written and published by other sites, I can't see that they'll garner much traffic from search engines, or at least Google.
A certain amount of re-publication would be okay, I suppose. But I'd be sure I was writing most of my own stuff.
Michael
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