You can, first and foremost, confirm they're still alive and in the game. You can see their health, clothes/armor/gear, smell, all stuff that you should learn by going and RPing with the person.
[OOC: Character returns to the IC world. ]
This isn't a super big deal, but it can tip you off OOCly that a certain character is still alive and well. Of course, you wouldn't act on that knowledge, but it'd be better if you were OOCly unaware as well as ICly.
Two players are RPing in public, one needs to step away, the other will take the same moment to take a whiz, both go @ooc. They need to know when the other party is done and returning.
Do we support this use case or do we hide the enter/exit message?
