Well, I certainly don't have time to moderate it! I long since stopped reading it all.
Having done a few years as a part time newsmaster, one thing I will say is that people don't ignore spam in this newsgroup, they do complain, without generating much noise here. That doesn't mark this group out in particular, but what does is that there are usually a few well researched, well written complaints for any incident, which means the newsmaster doesn't need to go off doing the research themselves, and you are more likely to get the response you want from the newsmaster. That is the best way to handle spam, and I would suggest people keep that up. (Not having been a newsmaster for 18 months now, I don't know if things might have changed a bit.) Often the complaints come from people I've never seen posting in the NG, so I assume there are a significant number of read-only users out there too.