How to Crush Your Competition My friend Karl used to call this the “embrace and extend” theory of competition, and when it works, it’s brilliant. I just found a new example of it yesterday (thanks, Jack!) that’s very illustrative. I have been a Firefox user for a couple years now and love the browser and its extensions. I almost never use Internet Explorer any more — although sometimes I “have to,” because there are a couple of web applications I use that just don’t work well in Firefox, like Outlook Web and online banking. Hopefully some of that will change over time as Firefox gets more mainstream, but in the meantime, there’s now a Firefox extension that allows you to…