Very cool prototype! I work in customer analytics and while I love the "infinite" column/row aspect of Excel, it's always annoyed me that it's not free-form, an

Very cool prototype! I work in customer analytics and while I love the "infinite" column/row aspect of Excel, it's always annoyed me that it's not free-form, and that the width of a block of cells is constrained by whatever data I have above/below it. It would be cool if you could use the Excel-style UI and formulas to build a back-end for small web apps whose front-end could be customizable with CSS.