I want to win a Nikon 1 j1?

Does anyone know of free giveaways going on?

Nikon does not make money by giving away free cameras.
Theoretically somewhere out there could be a real contest which, in exchange for a big exposure to advertising in the entry process, might offer a drawing for a pretty good camera, for which your individual probability of winning is extremely tiny.
Anything that promises a high probability of winning a prize worth that much is an identity theft scam.

I want to win a Rolls Royce, do you think that's going to happen?