I woke up this morning to an e-mail that a new user had registered on Excepticon early this morning. I have it set up so that I get BCC'ed on the welcome e-mail that goes to any new users. The user signed up for the free Developer plan, and they even created a project!
This is the first interest anyone has shown in the service since I started publicizing it about a month ago. I feel a bit like a house cat who, now that he's caught a mouse, doesn't know what to do with it. I will likely reach out to the user via e-mail in a couple of days and thank them for trying out the service, ask if they've had any issues/questions getting up and running, and see if there's any feedback that they have for me.
Hopefully this is the first of many!