Old Oligarch will love this one. Classic Microsoft.
Opera shows graceful, humorous response to Microsoft blunder - Feb 24, 2003 Microsoft has responded to Opera in a petty style: Microsoft began to sabotage the Opera browser when Microsoft discovered it being used to visit the MSN Web site.
As has been documented on the Opera site and elsewhere on the Internet, Microsoft began to send Opera browsers — and Opera browsers alone — instructions to shift the text display 30 pixels to the left for portions of its pages. The intended result was to create the impression that Opera wasn't displaying the pages correctly.