I actually think this is more useful than Google Instant since search engines are much better built nowadays and a lot of time the first search result is the one we want (unless it's something really specific). The fact that we don't need to click on any link after the search reduces another "not instant" annoyance, which could become huge time saving over time!

Only issue being Yahoo search isn't as relevant as Google, I assume you didn't do it on Google because they have blocked access? Still, very impressive take on the "instant" element.

Just wait for the tweet/call from Yahoo :)