Hanky-panky at Flickr?

Clicking around on Flickr as usual, I got some pages served to me with crap like this at the top:

lGZfLXbw2iePnp2H6zeOgbO6XErEjlR6QJZoVY8-',
 'yahoo_addressbook_read_secret' => 'Hq4iZtK.ohml3rPyAXU.byKnNOQK2QE1qKX_imzk-',
 'yahoo_addressbook_write_secret' => 'kg.B046_P2BFYTueDDasYAE0j0Afo8K2htJWrDj0-',
 'windows_live_secret' => '$$$$',
)
?>

Browser bug, hack, or sunspots?

Added later:  Some forensics