While novel, there is no way this could be profitable for anybody.
1000 hashes per second? This is 600,000 times slower than an ATI Radeon 5970. The power consumed would vastly exceed anything this could produce.
Sorry, I didn't make it clear - if it says 1000, you're getting 1000
kilo hashes per second, so 1 Mhash/sec. As CPU miners go, it is slower than one of the C miners, but that's the tradeoff of having it work from the browser.