what requires work?
A related field or subfield?
Either way Sonification seems to share many of the same concerns, and would seem to be complementary at the very least.
Interaction - where to put it?
"Interaction techniques" is both, a high level element in the taxonomy and also a part of "Visualization Design Patterns" / "Interaction Patterns". It is hard for me to discern the difference? In order to reflect the importance of interaction, I would rather vote for making it a top level entry and moving down the interaction patterns entries...
-- Wolfgang Aigner 10:19, 8 April 2008 (CEST)