The first of those is actually the Youtube audio which I posted.
HOWEVER, the text of the transcript, which lives only at Free Republic, is what has been scrubbed from Google.
The point is that you can't search on audio at Google, but you can search on text, and the text [what you can actually search on] is what has been scrubbed from the Google database.
Actually, my point was that there seem to be more than enough Michelle Obama transcripts to worry about one of ‘em getting lost! :-)
Google doesn’t maintain a database of every link it’s ever seen. As Google’s spiders fail to find links to threads (they fall off the main page and/or the spider has to crawl too deep into the link tree to see the page), Google will abandon that information.
To Google’s robots, the page has essentially disappeared. I reckon any thread (give or take) from around the same time would also fail to show up.
I’d also like to note (and I’m not trying to be rude), FreeRepublic is put together in a way that makes it almost opaque to web searches beyond the first few pages of News links.