Startup Idea : Message in a Bottle

How romantic is the concept of a Message in a Bottle?How about if there was some kind of digital service like this.People can put their Messages (text, photos, videos) in a bottle and send it out to the world. On the other side, people receive the messages and can decide to either (A) keep the message or (B) throw it back. If a message gets discarded more than x times it would be transferred into a unwanted messages area.Once you decide to keep that message, it's yours, nobody else can receive/see it. You can find out more about the person who sent out the bottle and decide if you want to send back a message (or not).Probably have to get more into detail.Im thinking Snapchat meets ThumbsUp meets Chatroulette... ish.