How accurate is this XKCD comic from August 10, 2011?
linked and maintained alt-text http://imgs.xkcd.com/comics/password_strength.png
I've always been an advocate of long rather than complex passwords, but most security people (at least the ones that I've talked to) are against me on that one. However, XKCD's analysis seems spot on to me.
Am I missing something or is this armchair analysis sound?