Startup Idea : Eavesdropping

I was at a restaurant overhearing an interesting conversation taking place between two people on another table. I couldn't help but getting engrossed in what they were saying. I was eavesdropping, which some might argue is borderline unethical, however their conversation seemed like a story that hooked me up till the very end, which made me think: What if there is an app that let's you do that? A set of volunteers talk to each other, anonymously or the other way, and let random people view their chats. An Eavesdropping App.