Flexibility is the order of the day as Web technology developers try to keep the easy-to-run but imperfect test from holding back developments of new standards.
In the popular Acid3 web standards test, Google's Chrome beats out the latest stable builds of Firefox and Internet Explorer.
Opera CTO Håkon Wium Lie asks how seriously Microsoft's Web browser will support an upcoming Web standards test.
This story initially misstated the Acid3 benchmark scores. The latest IE9 preview scores 95 out of 100, earlier versions of the IE9 preview scored 83, and the current Internet Explorer 8 only scores 20.