Ok, that's a good point. We are offering 2 week free trial, so I think we will know a little more next week. We have been using ads to drive traffic to our site. We are spending like $2 per sign-up and not sure how sustainable it will be in long run. We are thinking of conferences or community events where we can meet more users. We want to talk to more users and get more feedback, but I'm not sure how to approach this.