People will use their time mainly to post messages. They will not take this in private interaction with friends or other people, or even the social skills necessary for success in the future.
People will spend most of their time in the post. They will not use this time to face interaction with friends or others. Or even to develop the social skills necessary for success in the future.
People will spend their most to post messages. They won't take this interaction face-to-face with friends or others. Or even developing social skills necessary for success in the future.