When building content aggregations for catalog content in cross-site publishing scenarios Content Search Web Part includes the original URL of the catalog item in the page source.
SharePoint 2013 offers new capabilities for publishing web content to multiple channels. While configuring it on your website isn’t that complex, planning for it upfront will save you time and rework afterwards. This article describes steps and considerations that you need to take to ensure that you will be able to publish your web content to multiple channels.
When using a separate authoring site for your website keep in mind that its user experience will be used in search and can be made visible to your visitors.
When working with content catalogs, if your visitors use an invalid URL, instead of seeing the Page Not Found page they will see an empty page.
When working with content catalogs which are published on the Internet use standard SharePoint SEO fields to add search metadata to your catalog items and optimize them for Internet search engines.