Rough summary of what this means: If you post once per day on average, then you will eventually get the maximum number of activity points that you can get. Posting more than once per day on average is useless for increasing activity. The maximum number of activity points you can get is 1 per day, but your activity score only updates every two weeks. Therefore, it will take about 100 days to get 100 activity if you post once per day on average.
1) Increase 14 activity posts at once if you make at least one post in the activity period(in which you haven't posted yet)
2) Increase by 14 activity points when you make 14 posts on the same day(/hour), if your post count is lower than/equal to your potential acitivity
