It almost certainly won't be advertising, though we'll make it easy to get to Dabble DB from here, which seems to be a good way of monetizing traffic. Otherwise, we're pretty open-minded at this point -- I'd be interested in hearing what people think makes the most sense..
It doesn't have to be, and we've talked about going down one or both of these paths in the future. Doing it web-based is a nice way for us to demo it, though. Also, since it's possible that we'd want to somehow integrate the tech with our main app, doing it on the web is a natural first step.