I've just looked at the first bit of the question (which is all that I can get from Google, since the page appears not to have been cached):
"As I can't afford nor be prepared to pay the prices Amazon are quoting, has anyone got a copy of The BBC Sessions/Live at the Reading Festival . . ."
If that thread is going where it appears to be, you were seeking to breach copyright law by making an unauthorised copy of a copyright recording. Hence AB will have deleted it, because the site can't be seen to condone illegal activity.
Chris