I dont mean to put you on a defensive but, what makes me want to go to YOUR site. Where will the content come from, users? aggregated? How will the content be shared? Social networking? reddit style?
However I do think that the idea of use aggregation leaking in to the site, Reddit Style, could be a good resource. However that probably wouldn't be a main feature of the site, but likely a sub-section of the site completely separated from the actual content.