I worked as an editor on DMOZ years ago and I worked diligently and responsibly. As an editor the biggest problem I saw was people submitting to the wrong category. So I spent half my time forwarding the submissions to the correct category.
And please don't anyone suggest applying as an editor in this category, even though the DMOZ site says they're looking for an editor there. I'm given to understand that I'd have to supply them with three site suggestions related to the category. Aside from the band's site and the one fan-created site that's already listed, there aren't three other sites that are worth listing, and I refuse to suggest sites I know to be crap in an effort to get the site I'm working with listed. I'm not knowledgeable enough about the next level category up (blues bands starting with the letter "S"), nor do I have enough interest in becoming that knowledgeable, to make applying at that level a worthwhile endeavour.
If I'm going to apply as an editor, I'd like it to be for a category that I'm interested in. No point in signing up if you're not going to work, and no point in doing the work if you're not interested in the topic. That's my philosophy, at least. YMMV.
I can't remember all the detail but I think I asked for a different or additional category and got rejected without explanation. Since then I have applied to be an editor again at least once and was either totally ignored or rejected. I don't understand their criteria for editorship but it appears to be as difficult to become an editor as it does to submit a site.
We have been talking in another thread about artificial SEO practices that have nothing to do with making life better for the viewer, but only to do with improving SE rankings. Not withstanding projectphp's vigorous defense of DMOZ, our continued attempts to force our sites into DMOZ seem to be a case in point.