According to Wikipedia "Art is the product or process of deliberately arranging items (often with symbolic significance) in a way that influences and affects one or more of the senses, emotions, and intellect."
Curation is the act of deliberately organizing content around a topic in a way that informs and educates your audience.
The headlines for a piece of content can be viewed as symbols. A headline is what draws people to reading and article or not. Additionally tags and tag clouds are also a symbolic representation of the curated collection of articles.