Reviewing this year's survey results I was surprised that, while B2B marketers experimented enthusiastically with social networking sites (Facebook, LinkedIn) and microblogging (Twitter), social media have yet to create budgetary or business impacts on the marketing mix. (Note: this research looks at firms of 50 employees or more only. The data set includes results from smaller firms as well. Tim Harmon will likely publish on this data.) In fact, most digital media fair equally, and unremarkably, poorly on the list of "what works?" in the marketing mix.