Their reasoning is that all of the Web 2.0 innovations were enabled by the tools Firefox provided.
"Without Firefox, Web2.0 may never have occurred. It changed the industry’s perception of what a browser was and what it could achieve. It deserves it’s place at number 1!"Wow, I'm impressed. I've been using Firefox for years, but I never realized how important it was. Still more amazing that it can be the technology of the decade and be celebrating it's 5th birthday. So it's been around for only half of the decade.
I wonder if Chrome will have the number 1 spot for the next decade?