The Shared Site Content Web Part enables you to pull content from a single source of record, such as the University Catalog. This web part prevents the content from becoming stale or inaccurate by displaying the most recently published version of the content's source.
DePaul college sites use this web part in their Academics sections to display information from the catalog, such as degree requirements. It updates in real time when the catalog updates (twice per year) to ensure that the contest is always accurate.
This is a page on the University Catalog:
This is the same content from that Catalog page on a different page using the Shared Content Web Part: