BusinessWeek columnist Alex Salkever sings the praises of Apple’s new iChat AV audio capability. In his article he wonders what kind of competition the giant telecoms are going to face in the future as Microsoft, Yahoo and other jump on the bandwagon. “Apple’s latest tech wizardry makes voice calling over the Net a snap. That could be a push off a cliff for today’s telecom giants,” notes Salkever in the story.