Karmurl is a free and simple way of getting instant feedback for your work. You give feedback to receive feedback.<p>The idea was inspired by a comment made by photon_off (<a href="http://news.ycombinator.com/item?id=1683309" rel="nofollow">http://news.ycombinator.com/item?id=1683309</a>).<p>I should mention that I have already submitted this once previously (<a href="http://news.ycombinator.com/item?id=2999852" rel="nofollow">http://news.ycombinator.com/item?id=2999852</a>), but at the time it had very few users and therefore offered less value than it does now.