Very odd.. i've not had this ever happen to me in all these years of using XF.. I wonder if you can reproduce the problem somehow so I can at least submit it to the XF devs as a bug report?
I don't use the "profits" no, they get used for expenses for FP over time during times that the goal isn't reached.
There's hosting fees and license renewal fees (for the forum software and it's plugins).
I think it's okay as long as you don't get too raunchy with it. We're an 18+ site after all.. Just keep it something that could pass as "somewhat" sfw at least.
We will slowly be re-adding categories over time/ as we rebuild. If you'd like to see specific categories please post them in the suggestions subforum.
Calm is basically the tech person besides me, he does most of his work behind the scenes.