Hey Kevin,
Thanks, yeah, this analogy makes perfect sense. I'm less concerned about exporting content (I have local copies of everything, after all), more, 'what do I do if my site isn't there one day?' or 'what do I do if I'm dumb enough to wipe a page' - that sort of thing.
The export feature is a good thing though, I'm off to try it out.
Thanks for responding.
Mike