I'm sure that I used to see friends' updates which were set to "custom", and that was all you could see. I've been setting stuff to custom as well (eg to avoid spamming friends who are not parents with loads of baby stuff), and if I hover over the little custom icon, their names come up for me. I didn't think those friends could see who all my updates were shared with, though. However, I've just checked it by looking at DP's account and he can see the exact names of the people I've shared something with (as long as he's one of them, obviously). I don't want this! I don't mind if they see "Custom", but not who they all are! Any way round it?