I've noticed a strong inverse correlation between people building businesses with expected business practice, and the "tech" press. What Zulily is doing is not a disruptive technology, it is (potentially a disruptive business practice).
It is easy to forget when reading inside the tech 'sphere' that there are lots of things that have to get done everyday by businesses, and those processes can be improved or made more efficient with technology. The closest one I've seen here was 42floors which is trying to disrupt the commercial real estate market, but it isn't a "tech" play, it is a business practices play.
Creating a way to share a moment in time, an instant, right now while preserving that feeling of "instantness" that is a tech play. Eventually, perhaps after this second burst of activity, tech will be just as boring and all the cool kids will be doing bio stuff or space or something.