- Filtering and reporting posts according to the length of post
In as much as one line posts could also be quality, we know that majority one line posts are spam. So, reporting all one line posts to the moderators by the AI will be of great help. In the same manner unduly long posts will be checked of repetitions and reported to the moderators who inturn decide whether such short or long posts are good.
7 for the effort but lets not add to the moderators workload they have already, imagine having to go through all one line replies reported by the AI for spam, that's going to be a handful of work for the moderators and I don't think they're being paid that much to go through the stress (and beside, they have real life too). It's better the forum members report the one line spam when they encounter them and it's left for the moderators to be judge as the system is. This way we're all contributing to keeping the forum clean and healthy off spammers, same goes for the length posts too.
- Other things the AI could be trained to do
The AI will detect how frequently a poster posts, it could report high number of posts within a short period of time which mostly are spam posts.
Not in all situations are high numbers of post written within a short time associated with spamming but this is a writing pattern used by most spammers, that we all know. There are times though that the discussion can be very captivating and interest that you might not know when you have written what could be considered a high number of post within few hours especially when there's an argument and you're both trying to prove your points. Spams should be more about the content of the post and not quantities.