Presumably reporters are still allowed to use anonymous sources without disclosing the biases/agendas of the anonymous sources, though. Hat tip: Romenesko
UPDATED: Gearino thinks the N&O's new plan is a way to save themselves some work
The paper already deletes offensive comments, and will continue to do so. It will also continue to monitor its blogs in order to keep things on a civil level. The only difference is that the N&O wants to spend less time doing so, and has chosen a Big Brother tactic to get you to rein yourself in.
In short, this new edict isn’t rooted in a high-minded concern for “the sensibilities of decent people.” The N&O’s managers simply hope that a vaguely intimidating taking of names will save them some work.
Update #2: In comments, John in Carolina may have identified the N&O's actual policy on anonymous sources:
A journalist friend of mine says the easy and honest way for the N&O to explain its policy on anonymous sources is just to say: "We never use anonymous sources except when we want to."