Instead of going to each person's wall to post, we'll tag you here with whatever we need you to do, including inactivity notice and event notice.
Anyone can make a notification post if given such a task by an admin, or for any good reason. Poke people if they forget things, especially if it's multiple people, instead of going to 5 different walls and not knowing who didn't reply.
To make it obvious in your "all replies" page, notification posts should look like this:
NOTIFICATION: insert message here
