Quote of day: Don't interrupt gamers

Video game advertising is a potentially great opportunity for Microsoft, said Robbie Bach, president of software giant's entertainment and devices group, in a story about his company's purchase of a related company. But it must be done carefully, he added.

"Make sure whatever you do doesn't interfere with the game playing experience," he said. "Do not interrupt someone when they are gaming. It is a very immersive experience."

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