Jesus Creed has a good discussion yesterday and today on the increasingly harsh tone of a small group of younger Reformed voices Scot McKnight is referring to as the "neo-reformed." Some of these have gotten to the point where they tend to accuse non-confessing Reformed evangelicals as being heretics. I've previously here expressed frustration about the same, although I've been rather less gracious than Scot. The discussion includes the question of why this has been attractive to a certain set of the younger generation, and how the inerrancy of scripture figures in.
Related, one commenter linked to a great article by theologian John Frame (Reformed Theological Seminary ) who surveys 21 theological controversies within the Reformed world in the last century, and the resulting repetitive denominational splits. He ends with an appeal for better tone and historical view, but titles his plea as "An Unrealistic Dream!" Sad.