Show that photos are waiting for approval!
I'm sure this is a far-out suggestion for most webmasters but I'll toss it out anyway.
I don't want unapproved images hidden. I like to see an indication that they are out there. Status is "waiting for approval". Some kind of blank frame shows instead of the picture.
Obviously, controlled by an options switch, since many will want the other behaviour.
This is a marketing tactic for adult and pay sites. Brian does fantastic work here, but the product tends to ignore the money/marketing side.
Think videos. Think of the time it takes to download, edit, review, and communicate with the user. Think of distributing content evenly over the month...
Thanks for listening.