I also have the general impression that in the past few months there has been an uptick of uncharitable tinman-attacks on progressivism by libertarians in the LW comment threads. Curiously, there seems to be less overt hostility between reactionaries and progressives, even though they're much further apart than libertarians and progressives (although this might be because the more hostile Nrx were more likely to exit after the creation of Moreright).