Thanks for your comment. Briefly stated, a "social wine brand" is a brand promoted through social media. It is also a brand exposed to social media whether its owner seeks such an exposure and is unaware of them at first. Let me know if this helps you.

Please explain what you meant by "What is a social wine brand"? I am not sure if I understand this. I believe a brand is a brand and "social" like in "social media" is only one of the many tools we use to establish the brand.