95% of human beings think Twitter is ridiculous. Don't sweat it. Build the most basic thing you can, put it in front of your friends (and yourselves) and see

95% of human beings think Twitter is ridiculous. Don't sweat it. Build the most basic thing you can, put it in front of your friends (and yourselves) and see if they love using it. If so, you win. Communication apps are inherently viral. The game isn't "build something EVERYONE wants"... It's "build something some people want A LOT". The breadth of people you appeal to is important, but not nearly as important as how much people love you. An elevator pitch in a space that doesn't inherently seem broken (chat) is hard. People don't KNOW chat is broken. It's not painful, so it's hard to describe the problem you're going to solve... Just like it's hard to explain why the iPhone is so much better than other phones.