Market cap: $52 billion Platforms: LinkedIn Score: 780.1Market cap: $35 billion Platforms: LinkedIn Score: 780.2Market cap: $65 billion Platforms: Twitter, LinkedIn Score: 780.3Market cap: $261 billion Platforms: Twitter, LinkedIn Score: 788Market cap: $244 billion Platforms: Twitter, LinkedIn, Instagram Score: 788.7Market cap: $121 billion Platforms: Facebook, Twitter, LinkedIn Score: 795.3Market cap: $14 billion Platforms: Facebook, Twitter, Instagram, LinkedIn Score: 799Market cap: $172 billion Platforms: Facebook, Twitter, LinkedIn Score: 802Market cap: $48 billion Platforms: Twitter, LinkedIn, Instagram Score: 815.3Market cap: $279 billion Platforms: Facebook, LinkedIn, Instagram Score: 828.7