{...} In those two weeks you only have to post once to get it. {...}
If your post count is equal to activity, you will need to make 14 posts to get 14 activity point.
https://bitcointalksearch.org/topic/til-activity-does-not-work-on-precisely-2-week-intervals-interval-timings-582736
https://bitcointalksearch.org/topic/unofficial-list-of-official-bitcointalkorg-rules-guidelines-faq-703657
Yes, but minimum 1 post per day... because the OP can think I will make 14 posts in one day and I am ok (it is not so simple). Basically you earn 1 activity point each day , but these points will 'appear' and the end of the 14 days.
No, you can write all 14 posts for the period in a single day. It will make you look like an account farmer and BadBear might ban you, but activity calculation does not care when you do the posts as long as one of them is in the 14 day period.
