The idea presented here, of a client-side-only wiki, is already implemented as TiddlyWiki.
They use the term guerilla wiki, which I really like.
Things that are showstoppers for my intended use:
THings that are annoyances:
- the back button doesn't work! They do something weird with navigation
- URLs like this are REALLY REALLY slow
- umm, you have to DOWNLOAD THE ENTIRE WIKI just to view one page! The entire wiki is 3mb...
- apparently TiddlyWiki was created before AJAX exited