There's a request to implement "I Like" and/or "Rating" functionality in Cross Site Publishing for an item showing as a catalog-item.
There is a single page that displays the detail for the items created in authoring sites. If you enable ratings on the list that contains that page, after you "Like" it, you are liking the reusable page, rather than the item it's showing.
The idea would be to "Like" the item that it's showing, rather than the reusable page.
Is Social tagging/liking/rating functionality supported at all on SharePoint 2013 with Cross Site Publishing?
Otherwise, what are the alternatives?