Hey HN!<p>I'm Jeremy, one of the devs of this hackathon project. Thanks for checking this out, glad to see the community has interest in it. We made this project for NodeKnockout, and did not intend for it to be posted on HN.<p>In the current release, we have a couple of things blocked out for various reasons (legal, ethical, etc) so that it is not 100% functional.<p>We are very well aware that our current hashrate is pretty impractical. However, there are a number of optimizations we plan to implement to greatly improve this, including using WebGL. The problem that we're looking at starts with bitcoin, but we're also looking at more general purpose computing in the client too (ie, text mining).<p>And in terms of battery life, yes, it does run up the cpu a bit. However, for certain users (ie, desktop), spare processor cycles could be more worth it than seeing ads. Web services using tidbit could make it an opt in thing for desktop clients.