There is, it seems, a Soloman-esque dilemma that faces those who wish to be buzzword compliant.
Obviously a meaningful RESTian URL is important. EventQueue already has this
# Show a year http://thegestalt.org/simon/eq/2005/
# Show a month http://thegestalt.org/simon/eq/2005/12
# Show a day http://thegestalt.org/simon/eq/2005/12/15
# Show an event http://thegestalt.org/simon/eq/event/palm-datebook-007f9a18-000076
However certain aspects of navigation - moving between days, weeks and months and years would certainly benefit from some AJAX which would leave the url inconsistent with the display.
Week in particular would benefit from the ability to slide left and right by one day.
I suspect, however, that a meaningful URL is more important.
One solution, from Tom Insam, is to have