So it's not that people don't balieve that rabbits cannot digest these substances, its more to do with the fact that rabbits are not suffering from a few chocolate drops as much as made out in a "book".[/color]
You make some valid points Emma, and I agree with some of what you are saying.
The bit I disagree with is this: that although Toby has not been unwell after eating chocolate, this does not mean to say that he could not have become unwell.
What we do know but having experience of many rabbits in our care, is that in the main treats and chocolate can indeed make the majority of rabbits have sluggish guts which can lead to the often fatal condition gut statis.
Rabbits hide illness very well, and it is unlikely that you will see direct affects from bunnies eating chocolate, more that it affects internal organs and leads to other diseases that one may or may not attribute directly to incorrect diet.