I have a few FF programs and sometimes manage to gain silver or gold status, but I find the airline sites to be incredibly opaque about how many miles I need to keep my status or move to a higher level. It's like they don't want me to know my rights as a customer and take advantage of my status.

Anyone else have similar issues? How many programs do you regularly use? How often do you check your current miles and status? What confuses you most about the miles earning or spending calculations?