What website would you make if you have half a million dollars?

Hi if you are a programmer and has half a million dollars, what website would you make that will be a huge success?

 

if i have a million dollars, i will make a funny picture website

 

I would create a social website, but come up with a unique niche around it. There would be lots of ways to monetize it and double the cash put into it.

 

I would like to create a social bookmarking website like : digg ,stumble upon etc......This kinda sites earn a lot......