netmeg - 12:40 pm on Aug 10, 2012 (gmt 0)

That's not far off from what I do for my sites, except in my case it's not so much non-visited pages as expired or canceled events that are not likely to be resurrected; we slap a NOINDEX on them for Google and they're rendered "inactive" which means they don't show up in any navigation or links or widgets on the site. You could still find them if you go direct, but almost no one ever does.