http://www.allfacebook.com/2007/07/facebook-gets-an-upgrade/#comment-710

As the blog writer says: productivity has soared by 100% countrywide ;-D

I've noticed that Facebook is now adding a "pwstdfy" parameter to the query string of every link in the UI. That's a bit odd.

Youtube has been hacked too and nobody talk about that ^^

Im my humble opinion "pwstdfy" must be related either to the fact that the code has a flaw and they had to do smg hacky or that they had to duplicate the database to go back online (and that would enable them to avoid duplication)

pwstdfy

PW >> Password
st >> String
DFY >> Detoxify

http://www.mdibb.co.uk/2007/07/31/did-facebook-get-hacked-today/
And that would fuel the Hacking rumors.

I just love fueling conspiracy theories ;-)

It's also weirdly redirecting all profile links through the search page. I wonder if that's being done to prevent farming profile details or something.

Facebook wasn't hacked. They say:

<< This morning, we temporarily took down the Facebook site to fix a bug we identified earlier today. This was not the result of a security breach. Specifically, the bug caused some third party proxy servers to cache otherwise inaccessible content. The result was that an isolated group of users could see some pages that were not intended for them. The site has now been restored and we apologize for any inconvenience this may have caused. >>

Via: http://scobleizer.com/2007/07/31/facebook-outage/