We launched another product at referlist.co. We had many users, but wanted to talk to them to learn about why they signed up, what they liked and didn't like, and how to convert them into paying users. We sent out emails but it was very difficult to get users to speak with us.
So, we created Talkative, the easiest way to interview your users. You can embed Talkative on any webpage and immediately communicate with your users.