Influencer Marketing -- Does it add value for B2B companies?

Jim is back talking with Brian Walker, CEO of AE Marketing Group on the topic of Influencer Marketing.  Does it work for B2B companies?  Why or Why Not?   What types of "marketing" projects should middle-market business-to-business companies focus their precious resources on?  (If you have a dollar to spend, where should you spend it).  We branch out into a side discussion of trying to calculate the real size of a company's addressable market, building simple "market" data marts and fallacy of "Big Data" in marketing.