When you think of browser innovation, admit it: You don't think of Internet Explorer. Netscape originally took the wheel of browser innovation, and its descendant, Mozilla's Firefox, is at the innovation wheel again, this time with two very different (and exciting) products:
Snowl, a unified messaging/browsing experience, and the second is Aurora, the next-generation Firefox browser that we, the people, will define and build at Mozilla's request.
Indeed, it's this latter innovation - true community feedback on what can and should be in the browser, and then the development process to deliver it - that I find most striking. Mozilla is asking everyone - not merely developers - to get involved. When was the last time you saw a company do that or, more importantly, provide the means to actually be able to do it?
If you answered "Never" you wouldn't be far off.
I've long complained that I, as a non-developer, can't do much to influence open-source projects. Mozilla, however, is tearing down that wall. That's true innovation, in my book.