UK B2B marketers were active on many social network platforms. More than nine in 10 of those surveyed used business-oriented LinkedIn, the social network of choice among UK business professionals, and 89% used Twitter. The huge differences between these two platforms alone—the former more focused on professional networking and content, and the latter a place for 140-character clips of (often real-time) information—could already make coming up with a standard measurement system more challenging. And that doesn’t even take into account the overwhelming percentages using Facebook and YouTube. Read the rest at eMarketer.