Feature Request: Social sharing buttons
Possible Answers to Your Question:
This is a feature already included in Layers Pro, which you can learn more about here:
If you are referring to post-sharing functionality like Facebook Like buttons, it will never be something we include in core mainly because it depends on 3rd party scripts that change too often, or services which already provide their own plugins, such as ShareThis and Add This, and is not customizable from a framework perspective. In WordPress terms, sharing is plugin territory, so the existing selection of sharing plugins out there is quite good and thorough. You may also find several child themes that integrate sharing with custom styling.