Science and Math Defeated scholarship for excellence in the sciences and maths?

I’ve been thinking about humanity recently and wondering: should I host an essay contest, for best path-breaking essay in the sciences or maths? The prize could include recognition on my blog, alongside a cash prize. It would almost certainly be modest, but nothing to sneeze at, perhaps $50 and a well-constructed certificate. After all, I do not (yet) have institutional support. I was looking at this “Fastweb” website and wondering also if I could post it on there, but I don’t know the rules! I will perhaps investigate this, but I just wanted to throw the idea out there.