I must admit, I only installed Greasemonkey last week and I haven’t had much of chance to play with it.

Anyway, I found this through Simon’s Blogmarks and all I can say is … ooooh.

Greasemonkey is the perfect tool for client-side accessibility enhancements, because any changes you make through the DOM will be exposed to assistive technologies. . . .Accessible Greasemonkey’ing is going to be huge.
Mark Pilgrim