Linguists first used the term backchannel to refer to the spontaneous responses and signals that provide interactivity to what is only apparently a one-way communication. Social media users have adopted the term to refer to the unofficial, multi-directional online conversation that parallels formal academic exchange at a lecture or conference. The Backchannels blog is intended to have a similar relationship to scholarly discourse in STS. It provides an outlet for alternative-format scholarly communications, publishing shorter, timelier, media-rich communiques of interest to the global STS community. The editors welcome proposed contributions.