Aggregation sites are websites that provide links to up-to-date articles or sources on certain topics such as world news, financial news or other content niches. Some aggregate sites have editors that manually choose the articles to link to whereas others have bots
that locate and post the links. From an SEO perspective, aggregation websites that just automatically post headlines may be seen by Google to have a negligible or even negative value whereas a site where the content is curated, the titles are original, and editorial content is added have positive ranking potential.
Video clip from Google about aggregated content