ndodge wrote:

You are aware, I assume, of the lack of offerings of
this kind, right ? This is a pretty smooth web-based single-pane outliner.

I would not say there is a "lack of offerings of this kind." In fact, this space is getting pretty crowded right now, with most of the offerings looking a lot like this one and offering basically the same features (single pane outline with collaboration).

http://www.thinkfold.com/
checkvist.com
http://listas.labs.live.com/
loosestich.com

etc.

Don't get me wrong. I want to encourage this developer - maybe this can be the best of these offerings, and maybe it can become something with unique strengths.