[Topic] SocialAccount [Status] Proposal [Vocab] Add SocialAccount type derived from http://schema.org/Thing to capture social account. Update http://schema.org/Person and http://schema.org/Organization by adding the property socialAccount expecting the type SocialAccount [Comments] See also the mailing list discussion [Summary] 
Introduce a type and a property to describe social accounts of http://schema.org/Person or http://schema.org/Organization