In a very simple language Content Curation is process of sharing a summery of your content that is important and relevant to the community in a meaningful way, an example of Curate content on Scoop.it by allenage.
Why you should curate content ?
Content Curation increases your brand visibility.
Provides a better reader experience.
It boost your Seo.
Build relationship with audience and many have a close look at the below Infographic and learn top 5 reasons why you should curate content.