SEO
WCM tip #27: Use XML Sitemap and Robots.txt
On your public-facing website use the XML Sitemap and Robots.txt file to optimize your website for Internet search engines.
WCM tip #23: Use the Vary: User-Agent response header when using Device Channels
When using Device Channels on your website set the Vary: User-Agent response header to let Internet search engines know that different HTML is rendered to different browsers.
WCM tip #20: Hide physical URLs from search when working with Managed Navigation
When working with Managed Navigation check the ‘Hide physical URLs from search’ checkbox for all pages.
WCM tip #19: Use Content Search Web Part for content aggregations when working with Friendly URLs
If you are using Friendly URLs in your website you must use Content Search Web Part to build content aggregations.
Preparing your public-facing website for multichannel publishing (SPC14)
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.