So far looking at my account age I have a bit more over 5 x 14 days periods, and more than enough posts to get member rank on forum.
But I am still Jr. Member - why is that?
Posts = The number of posts you have actually made (and that have not been deleted).
Activity = (14 * the number of 2 week blocks you have actually been
ACTIVE/POSTED IN).... OR your number of posts... whichever is the
LOWEST.
So, your account might have been created 70 days ago (5x14)... but unless you posted at least ONCE in each of those 14 day periods... then they will not all be counted as
active periods.
You registered: 2017-06-29, 23:40:08
Your first post was on: 2017-07-27, 19:09:51
That's nearly a month, so that is at least 1x 14days periods (possibly 2x periods) you were not active... your 2nd post was on: 2017-08-29, 19:37:06, another month later... so that is at least another 1x 14 days periods (again possibly 2x periods) you won't get activity for... You've then posted almost every day since then...
Given that your activity is currently 42, it looks like you've been credited with 3x active periods.
For the benefit of others who don't quite understand the maths:
Example 1 - Posting several times a day, going on holiday for two weeks.
Period 1 = 20 posts
Period 2 = 20 posts
Period 3 = 20 posts
Period 4 = 0 post
Period 5 = 20 posts
Your Post count = 80... but as you were
only active in 4 periods... your Activity = 56... lowest value out of number of posts (80) and (14*active periods) = 56
Example 2 - Posting once/twice every few days
Period 1 = 5 posts
Period 2 = 5 posts
Period 3 = 5 posts
Period 4 = 5 posts
Period 5 = 5 posts
Your post count = 25... your activity = 25 as it is the lowest value out of number of posts (25) and (14*active periods) = 70.
Example 3 - Burst/Spam posting
Period 1 = 100 posts
Period 2 = 100 posts
Your post count = 200, your activity = 28 as it is the lowest value out of number of posts (200) and (14*active periods) = 28.
Example 4 - Long inactive period
Period 1 = 1 post
Period 2 = 1 post
Period 3 = 0 post
Period 4 = 0 post
Period 5 = 0 post
Period 6 = 0 post
Period 7 = 0 post
Period 8 = 0 post
Period 9 = 0 post
Period 10 = 100 posts
Your posts count = 102, your activity = 42 as it is the lowest value out of number of posts (102) and (14*active periods) = 42
TL;DR - Your activity will only ever increase by
a maximum of 14 every 14 days... assuming you make at least 14 posts in those 14 days.
Rank is based on activity... while activity varies in the number of posts that you make and how relevabt it is to the topic...
Unfortunately, activity has NO relation to the relevance of your posts... hence the amount of shitposting and "spam" that happens here