From a team including the founder of Photobucket, Smackback is more than just a 'sticker app' for photos - it lets you interact with the stickers on each others' pics (hide/reveal, add, replace) making for either just a fun exchange of messages on a single photo between friends, or a potentially cool way for brands to offer hidden codes and unique interactions for followers on their social media images. This version removes all registration requirements and focuses on publishing to different platforms (e.g. Twitter, FB, Instagram).
State of Product Analytics Report
Hobnob