A Net Art Idea Line: Mapping lines of thought through time

The linkdup site reviews were recently updated with some examples of experimental interfaces for navigation and data visualization. Particularly interesting to me was The Whitney Museum of American Art's Idea Line (requires Java), which uses Java to display a stratified view of major categories of Net art. Mousing over each of the strata reveals the nodes of art works within. Mousing over individual works reveals the other categories (cross-references) under which the works may also be found, indicated by orange boxes. If you elect to view the "Totals" geometry -- one of the options in the lower left corner, an interesting visualization of the growth of Net art is revealed in the bulging of the lines as they move across the timeline demarcated by the years in the X-axis.