incrediBILL - 1:07 am on Apr 16, 2013 (gmt 0)
In this thread someone won'I just left another thread where someone is allowing Gbot access to WordPress admin because it complained in Webmaster Tools when they password protected it and it's not April Fool's day.
I'd let it crawl as I have thick and thin content and let it crawl it all without issue and have for many years. People can't find what isn't indexed.
You'll fare best IMO if you pretend spiders don't exist and just build a site for your visitors and ignore all the robot directives except NOARCHIVE.