Most academics (for what they
> are worth) consider email citations as solid as the paper the source is
> written on. That doesn't mean you shouldn't do it, it just means most
> won't care.
Well actually Darren, my supervisor has said quite the contrary!
Primarily because the topic is rather impoverished when it comes to
published resources. I've found the many debated issues on this list
quite thought provoking at times.