Just went through the walk through. Very cool. This takes a touch of getting used to, in terms of how it relates to what we're used to, but this sort of thing puts some incredibly powerful tools in the hands of literally anyone.
The easy creation and access to different IDs, making and managing files, sites, etc. Wow!
With this, it's easier to appreciate the sort of power SAFE will deliver to all users.
Thanks for your work, Will.