Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
Cyna: If you go to "Game rules" and select Backgammon, there is an explanation of the cube on that page. There is also a Backgammon discussion board, where I'm sure you could get lots of questions answered.