Ok, thanks guys. I can also confirm that you need to post once.
You guys have been a great help!
Um, another question. If my post gets deleted, and I only made one that week and I was credited 14 activity points, would those 14 points get removed? Or would they stay there?
In that case, I could keep all my activity and have 0 posts!
They'll be gone, I asked the same question and that was the answer from hilarious. BTW activity periods are once every 2 weeks , not 1 week, so you can "reclaim" those activity points if you post in the activity period again.