From IESB.net (http://www.iesb.net/index.php?option=com_content&task=view&id=6060&Itemid=99)
"The site entitled 'GHOSTSPY' has the message, 'Yes, they are shooting it already. And yes, I am part of the crew. And no, I won’t tell any details. Because if I do and they find out, they will kill me. That’s why my little friend here will do the talking. Stay tuned for more …' His 'little friend' is a small hidden camera and it looks like he's talking about GHOSTBUSTERS 3. His call sign is 'ectospy' and he has two different videos uploaded that show a set in New York.
One with a New York cab being smashed (it also has a 555 number on the side) and another video of a strange creature walking the street, he seems to be made out of random objects like a bike and such, his name on the image is 'GARBAGE GHOST' - computer images of the creature are also included."
OH. MY. GOSH. A NEW GHOSTBUSTERS besides THE VIDEO GAME?! THAT COULD ONLY MEAN THE BIGGEST NEWS OF THE DAY!!! but wait....
UPDATE: It's A FAKE! According to Dan Aykroyd (who apparently hasn't seen the footage) says himself, "Script is commenced early summer. Hope to be in production by late fall 2009."