Allowing users to shop in-app (using the Facebook shop, for example) reduces friction and provides a positive user experience.
Spearmint Love — newborn and baby senegal consumer mobile number list apparel and accessories — links items pictures in its Facebook posts. With just two clicks, a user can purchase the item(s) in the post without leaving Facebook.

Facebook shop example from Spearmint Love
5. Share user-generated content
Interacting with the content your customers share can have a positive impact on your social media presence and your ecommerce business.
You can like and comment on a user’s post, but you can also share user-generated content, primarily if it features one of your products. Solo Stove — a manufacturer of efficient backpacking stoves — posts user-generated content to showcase the many ways its customers use their camp stoves.