In combination with my "DisplayExtraCommentFormField" event this will be used for a comment captcha plugin. This should go in the backend htsrv/comment_post.php and allow me to prevent a comment from being posted if I send an error such as: errors_add('Error: You have not entered the correct authorization code.');
I would like an official developer to comment on this and greenlight it before proceeding.
This will be done slightly different.
In Comment::dbinsert() a karma-collecting event (GetKarmaForComment) will be triggered.
You would modify the karma and the core decides what to do with it. Of course, you could add karma_max += 10 and karma_absolute += 0 which would make up a 1/11 karma if yours is the only plugin (because of starting with 1/1).
The defaults threshold settings would delete it then.