"When the facts change, I change my mind. What do you do, sir?" - (attributed to John Maynard Kaynes)
The algorithm has changed. The web has changed. Naturally, google has changed.
The algorithm has changed. The web has changed. Naturally, google has changed.
'It is impossible' is certainly false on the internet for almost anything you can think.
'It is very difficult': See the sysjail fiasco [1]. Once something is deemed possible, it is not very difficult, on computer systems.
So, it is not the facts that have changed, it is their perception by Google.
(EDIT: Also of note is the fact that this change was from a year ago, and the previous one was in 2003 ... So. Yeah)