We can watch every time someone looks at a profile. Do they choose to send that person a message? We can look at every message that's sent, and we can determine, was that message replied to or not.
We've learned a bunch of things; when you send a message to people, keep those messages short. Imagine walking up to a girl in a bar and going into a four-minute speech about how great you are. No one wants to hear that.
We did some research that showed that the very first word of your message that you send a girl - when we looked at men sending messages to women - the very first word can have a tremendous... can have a very accurate prediction of whether you're going to get a reply.