Hi, i have 51 posts and only 14 activity, but i saw guy who have 16 posts and 16 activity.. how?
You can receive a maximum of 14 activity each 2 week period, so that user was active for at least 4 weeks.
I think to have 16 or even 28 points (theoretically at the beginning) two or three days, can be enough. 2-week period opens and closes in Tuesday. So if someone open an account on Monday and till Wednesday write 28 posts - can gain 28 activity points. Just don't know which Tuesday open this 2-week period
