Board Thread:General Discussion/@comment-34501552-20180131191544/@comment-33140888-20180131200301

After some length of inactivity the game will move inactive people to the end of your friends list. So if you notice a higher level person at the end of your list, it’s because they have become inactive. Some people call them zombies. I have no idea how long they need to be inactive for the game to do this. There may be info on the wiki.

Also, some people keep zombies so they can hire them but they don’t bother gifting anything to them. You can also visit them and get XP and CIs just like visiting anyone else.