git-annex-3.20120605: doc/forum/What_happened_to_the_walkthrough__63__.mdwn

As of right now (2012-05-24 at 18:00 UTC), the [[Walkthrough]] page is basically empty. Its entire contents are "A walkthrough of the basic features of git-annex." No links (other than the autogenerated "what links to this page" list at the bottom) and no contents. Any idea what happened?