Dujo is gone, and I doubt he'll be coming back anytime soon. He has done this before but he came back eventually but he has never let it get so out of control.
They're in the Poems and the Journals. I haven't noticed them anywhere else, although I've seen one or so that posts on other's profiles asking for their emails to "send photos back and forth". The best thing is to just ignore it, don't comment on them or anything.
This is why I'll be glad when the journals and poems get report buttons >->;