I have a chicken and egg problem in terms of allowing users to classify and populate their own sections of the site.
I need users to be able to hierarchically classify their content on the fly. I think this means I can provide them with a term reference field. However, the term reference field only gives a predefined selection. The fully populated taxonomy would need to exist before hand.
I'd like to use taxonomy based URLs to make everything seamless: i.e. /section/subsection/node. I just don't know how to get lay users to easily populate these taxonomies on the fly.
Is there a widget which would allow users to add terms to a term reference field during node creation? AFAIK, only tags can be created on the fly, which doesn't help my URL system.