This feature is sort of left-over from something that used to be a setting option on YWS. I think if I remember right, foes couldn't interact with your profile and blog in some capacity - kind of like "blocking someone" on facebook, but now there's not really a way to set someone as a "foe".
You can still set your profile or blog to be private from certain people if you feel the need to. Just go to Settings Dashboard (the gear icon tab between the trophy and the home icon), click "Edit Privacy Settings", then type in usernames to "Blocked Users for Status Updates" or "Blocked Users for Profile" if you feel the need to. You can also ask people directly not to interact with you, and ask for moderators (those with green usernames) for help if you need further assistance.
Hope that helps!
you should know i am a time traveler & there is no season as achingly temporary as now
