Ok, this is a real post.  I'm not horrible at math, but it's definitely not my strong suit.  I can't figure the activity formula.  I even tried googling first, but I still don't get it.  All I could find was that commas are usually decimal separators, and sometimes used to mean AND/OR.

activity = min(time * 14, posts)

What's 'min'?  The word 'posts' is comma separated inside the brackets.  I assume it's meant to be.  Any help will be appreciated.