Wizzpic is the first instant messaging app to use an interactive discussion format.  You can chat and reveal hidden photos at the same time. Photos are shared as the chat session progresses, to intensify the experience.

Simply take a photo, select hide and reveal formats, along with the number of messages your friends need to send to reveal the picture.  Send your Wizz and launch a chat session. Your photo will gradually be revealed as you chat. No chat, no pics! You can prolong the pleasure, or the torment, as you wish.
Chatting will never be the same again.