Forum no longer has newbie jails according to theymos' vision on the forum growth. The head admin considers newbie jails are very harmful not only for newbies but also for forum iself in general.
Newbie jail was not about visibility but about newbies not being able to post outside a certain board. Even then, newbie posts in that board will be visible to everyone.
There has never been an algorithm to restrict how many people can view a post on the forum.
- Jay -