To me "Bayescraft" has the connotation of a particular mental attitude, one inspired by Eliezer Yudkowsky's fusion of the ev-psych, heuristics-and-biases literature with E.T. Jaynes' idiosyncratic take on "Bayesian probabilistic inference", and in particular the desiderata for an inference robot: take all relevant evidence into account, rather than filter evidence according to your ideological biases, and allow your judgement of a proposition's plausibility to move freely in the [0..1] range rather than seek all-or-nothing certainty in your belief.