Content aggregation (the automated gathering of links) can be seen on sites like Google News. Overall, this type of aggregation has been seen as a positive thing for content creators and publishers, and up until very recently, it was left to technology. Content creation, meanwhile, was a human effort.
But all that changes with curation — the act of human editors adding their work to the machines that gather, organize and filter content.
By Mashable May 3, 2010