I looked at the suggestions in those threads and they are illogical. Here is why :

1) He is suggesting something like giving merit points for certain amount of activity like based on total time logged in. Hearing this suggestion, first thing that comes to mind is that spammers will keep the account logged in for hours to make advantage of this.

2) He also suggested something like giving one merit for posts above 100 words. I have seen some of the responses by spammers here more than 300 words or so and they are just meaning less. They keep stretching the same thing to make posts longer.