You're probably right, although currently a disproportionate number of our visitors ARE using Firefox, in part because of our toolbar. It'll be interesting to see how that trends over time...

But from a broader perspective, we want to distribute Wundrbar in as many forms as possible -- as a website, a browser extension, an embeddable widget, a mobile app, etc -- because people shouldn't be tethered to a single application or platform to get their information. That'll be a big difference between us and products like Ubiquity moving forward.