I understand you don't want to scare people away, but why would anyone sign up for a service if they didn't know what it was? Screenshots would definitely be he

I understand you don't want to scare people away, but why would anyone sign up for a service if they didn't know what it was? Screenshots would definitely be helpful. Consider a screencast too. Also, why not show publicly shared content? At least give some indication of what's inside if you sign up.