I've had a few people ask "where's your photo in my followers box?". It'll return. I was messing around with a setting one day and accidently messed it up. Sigh. The only way I've found to restore it is to visit each individual blog and change the setting.
Since my blog list is soooooo long, I've only been doing a few a day. But no fears, even "faceless" I'm still receiving updates on your blogs and still trying my best to leave comments.