[malnourish]

It says it's in open beta. Checking the FAQ indicates that a desktop version used to exist. Which version did you use?

This is indeed an interesting tool, thanks for sharing.

[aaanotherhnfolk]

I had used it back when it was an Adobe Air program. Maybe the death of Flash contributed to the decision to build a web version instead; but I also think the Google Docs metaphor is a much better fit for the tool commercially. I hope they do well.