Edward Z. Yang wrote:
Penguin is an article Phoenix is an article Ice Bird is a history-less redirect to Penguin Fire Bird is a history-less redirect to Phoenix
You can move Penguin to Ice Bird but not to Fire Bird. Phoenix is our "Article C"
I used to be completely paranoid about vandals using page moves to shuffle article titles, by repeatedly swapping titles via a temporary page. That is, until I realised this attack was already protected against, using the feature you describe above.
And in a previous message:
I'm telling you, one of these days a vandal is going to realize that Page moves require little work to be done but can cause massive damage that requires lots of work to fix, and then create multiple puppet accounts and capitilize on this behavior.
This has already happened several times, we've seen this scenario played out to the fullest extent. We've implemented a few features to deal with it, such as "undo" links in RC and checks for "newbies" attempting to move pages. Allowing users to move over arbitrary redirects would open us up to truly irreversible attacks, rather than just attacks reversible only by admins.
-- Tim Starling