As part of our development drive on Stores, we've released a few changes!
Today we have one new feature, and a few important bugfixes:
To use this feature, login to your store admin area, and scroll down to the 'Social' section. Here you can individually enable which social features will show up on your storefront.
Once a social network is enabled, your customers will be able to click on the icon on your storefront, to share your product