Today is 1st April, and Google launched Google Venture. It might be a possible Google Prank that Google plays every year on 1st April.
The reason being, doing such a thing close to 1st April with such an interesting topic, Google might be playing big with people.
I'm not sure though :-) and might be wrong. Let's wait and see, what happens.
Update: Some more possible google pranks this year are
