And if rounded corners and box shadows was all you lost, that would be a valid argument. But almost every new feature in recent Firefox and Chrome releases -- all these vague, unspecified things that the advocates in forum discussions this week keep telling us will drive the web forward -- is currently as non-standard and browser-specific as ActiveX ever was. You can no more build a future-proof system on the new technologies around HTML5 and CSS3 today than you could build one around ActiveX back in the IE6 days, and we all know how that ended.