Flashgap - Time-delayed photo-sharing app of last night's embarrassment
Rich Kids - Photo sharing app where users pay $1000/mo to share
Poparazzi - Take photos of your friends
Slingshot - Quickly share everyday moments with lots of people at once
WiFi Map - A crowdsourced list of routers and passwords
Notabli for the Web - Childhood, privately shared & effortlessly organized