My friend Mike Ratliff has written an excellent post here regarding discernment. Mike makes the excellent points that we are not to be hasty in judgment but to ensure that what we know is indeed true before we make a judgment on the facts of the case. Also, we are to be loving and not fight the enemy with the same carnal weapons they use against us (fight fire with fire).
IMO, Mike has successfully navigated between the two extremes in this regard: the ecumenical response of "no-judging" or, closer, Tim Challies' method of stating that all judging must be done in a "positive manner" and thus he castigates all "discernment ministries". The opposite extreme can be seen in some discernment sites but mainly in the so-called "watcher of watchmen" anti-Christian discernment sites that litter the Internet like so many sewer pipes choked full with libel, all initially started mainly to defend some false teaching(s) or teacher(s) but which degenerates into the stinks they now are. Thanks Mike for your excellent article.