Also, this way you can easily set in your profile to not see that area anymore, which you just reminded me to do 
wow really this is possible? so what about hide this section for all new acc and had some warning message before enabling it..?
No.
also..how to make in invisible?
https://bitcointalk.org/index.php?action=profile;u=profile;sa=ignoreBoards
By doing so, you won't see posts made in this board by other users but you can visit it by clicking link(s).