The American Historical Association has released Guidelines for the Evaluation of Digital Scholarship in History.
Here's an excerpt:
The American Historical Association has established this committee to help ensure that our profession acts in far-sighted ways as the digital presence grows. Most concretely, it seeks to help clarify the policies associated with the evaluation of scholarly work in digital forms. . . .
Because academic contributions in the emergent digital environment can take many forms, the AHA has asked the committee to examine not only "work that can be seen as analogous to print scholarship that is reviewable by peers (i.e. journal articles and books), but also to address the myriad uses of digital technology for research, teaching, pedagogy, and even some that might be described as service."