Golden cookies loving suck now. I clicked one and lost 250 billion cookies. It might have something to do with the Grand Matriarchs being displeased though.
There seems to be more golden cookie types too. I've gotten ones that halve my cookie production for 60 seconds, and one that started a chain of cookies to appear that gave me 6 cookies for the first one, then 66, 666, 66,666, 666,666, and finally 6,666,666.
Somebody pastebinned the code foe Golden cookies. One of you more familiar with Javascript may be able to decipher it:
http://pastebin.com/X1CQwn0j