The overriding philosophy of Google’s Chrome browser can be summed up in one word: speed. I’m not just talking about its speed in surfing the Web, but also the speed at which new versions come out. Just over a year after the first release, we’re already at version 4. Google representatives try to downplay version numbers, probably since they’re not comparable with those of competitors like Firefox—just at version 3.6 after six long years. And Chrome’s version increments can’t be compared with Firefox or Internet Explorer’s in terms of the number of new features you typically see when they go up by a full version number.