Firefox has surpassed 22 percent global market share, its popularity driven in large part by the thousands of extensions and add-ons that personalize the Firefox experience for diverse users. Intriguingly, however, Firefox's extensions strategy didn't start out as a strategy at all. It was a compromise to keep the project's developer base together, as Mozilla's Asa Dotzler explains in this interview with John Newton (Alfresco) and Matt Asay (Alfresco, CNET's Open Road blog).