The support by the Mozilla Foundation, the Digital Badges Alliance, and the MacArthur Foundation for Chicago’s City of Learning 2012-2014 have created models (see also  http://www.2mbetterfutures.org/cities) for connecting digital humanities principles to the scale of the city as classroom.  In a workshop session we can spin out some of the implications and potentials of Cities of Learning initiatives and digital badges, the electronically verifiable credentials for education, engagement and professional development.  The structures put in place to develop and implement these programs are noteworthy themselves in the affinity groups forming, notably in community meetings for implementation and planning teams for badges.  These issues at the heart of digital humanities warrant joint workshop reflection on possibilities of broad-based interdisciplinary work and learning networks.  Long term objectives and outcomes of the workshop might include forming users or interest groups.  @PhillyCofL is a new feed to initiate related discussion.