I would prefer the following 2 pronged approach: * First, prefixed properties in nightlies/dev versions of browsers, such as Canary. This would allow testing, without imposing a specific standard. Once a proposal is written, implement it without a prefix in the normal way. * Second, we need a tool to update our CSS files automagically. I should be able to use the non-prefixed version and the prefixed version added by the tool. Apache, Nginx should have an extension which does this automatically and could easily be implemented by CDNs.