wanted to share my recent publication of the http://www.nestgrid.org/nestgrid-paper/ [Broken]. It's somewhat TLDR :), got screenshots, flash demo and codebase under Affero GPL for download. Quote: This paper introduces nestgrid, a novel document format and direct manipulation user interface and describes an implementation of it available as a desktop AS3/AIR app and as a browser-based flash demo. At its most basic nestgrid is a novel interface for editing and viewing a particular type of xml document, or perhaps a novel type of tree structured spreadsheet document. It turns out, however, that much like the superficially simple text-based interfaces like "spreadsheet" and "html browser" nestgrid opens up new and profoundly useful ways of human-computer interaction.