We had something like this on the old site but I just added it to this one. This feature is enabled for Supporting members and Moderators only.
Basically it allows you to ignore posts or entire forums. When you click on a forum, Watering Hole for example, you will see a button that allows you to ignore the entire fiorum.
Alternatively, you can ignore single posts. If somebody starts a post in, example again the Watering Hole, if it is of no interest to you then you can go to the first post of that thread and click ignore.
Ignored posts and/or entire forums should not show up on your unread posts, search results, etc.
This is useful, for example, for those people who come here strictly for the technical advice. If they don't want to read the general chit chat of the Watering Hole or Jokes forums they can choose to ignore them. If there is a single post that is dominating their feed, they can choose to just ignore that post.