Currently my favorite RPG publisher is Monte Cook Games. Overall I love everything about this company. They feel like they have their finger on the pulse of the RPG community and are in regular if not contestant contact with their fans.
As a whole they are all very active in all forms of social media and at least in my opinion do a better job than most much larger companies with their level of communication to their fans. Monte, Shanna and Bruce all have Twitter and are very active with their fans on these platforms.
They take the opinions of their fans to heart and have even rewritten portions of published materials when a small but vocal group of native american’s came forward with feelings of misrepresentation in one of their products. The company throughout the entire ordeal maintained a professional level of composure and even encouraged their fans to be civil in the discussions that followed leading up to the rewrite.