A comment by shog9 piqued my interest on this.
FWIW, I'm happy to provide data on the accuracy of spam flaggers if requested... But please make it a separate question so I don't have to post that in a comment. Tease: it's probably a lot worse than you think it is.
Right now Charcoal has some anecdotal year-old data which suggests 95,4% accuracy across all sites.
I'd be interested in (specifically):
- How accurate are spam flaggers in general?
- Are there huge differences by site?
- How many spam flags that end up being handled by a mod are declined?
Additionally (I don't know how easy it is to get that):
- Are users more likely to also cast a spam flag on a non-spam post when one was previously cast on it?
- How pronounced is that effect?
- How many posts were actually wrongfully deleted as spam (That is, spam deleted and then undeleted later)?