Just got back from NIPS 2011 (Neural Information Processing Systems, one of about 4 major machine learning conferences). One of the workshops there was on Philosophy and Machine Learning. An interesting statistic was that, when asked what topics we should discuss at the same workshop next year, 3 out of 10 of the discussion panelists answered "ethics". I didn't keep as close of track of the other responses, but I think they were roughly split between causality and universal learning, with a few also wanting to talk more about induction (there was some overlap there with universal learning).

The full program can be found here, although it is also linked to from the main NIPS website.

P.S. Did anyone else from LW end up going to NIPS?