If Jerry Yang starts wearing black turtlenecks, you’ll know Yahoo is ready to kick into high gear.

The Internet beometh’s cofounder took over the company Monday after six years of Terry Semel NOT creating shareholder value.

Sue Decker, the heir apparent CFO-turned president gets a promotion, but hasn’t been handed the top spot.

Yang may be well suited to reconnect with the innovators of Silicon Valley. He might have done better with Facebook founder Mark Zuckerberg for example, or had the technical foresight to have picked up Google for a song.

Make no mistake, this is a desperate “rally round the flag,” moment in the Internet company’s history.