During a public meeting of the W3C CSS Working Group, Mozilla web standards lead Tantek Çelik precipitated a crisis in Web Standards Land when he complained about developers who misunderstand and abuse vendor prefixes by only supporting WebKit’s, thereby creating a browser monoculture. Tantek’s proposed solution—having Mozilla pretend to be WebKit—inflamed many in the standards community, especially when representatives from Opera and Microsoft immediately agreed about the problem and announced similar plans to Mozilla’s. To get to the bottom of the new big brouhaha, exclusively for A List Apart, our Eric Meyer interviews Tantek on Mozilla’s controversial plan to support -webkit- prefixed properties.