In the News: Google Wallet, Martha Stewart, Diageo & more

American Idol viewers crowned a new winner: Scotty McCreery.

AT&T expands 4G network.

Ashton Kutcher invests in Airbnb, his biggest social investment to date.

Carven, the French fashion brand, mulls possible IPO.

China widens lead in renewable energy ranking.

Diageo reorganizes business units.

DoubleTree by Hilton launches year-long global rebranding.

Facebook's Zuckerberg says movies, TV and music are next social frontiers as site announces music service with Spotify.

Google Wallet mobile commerce launch looms as banks join battle for online payments.

Lady Gaga's first-week album sales projected at 800,000 as retailers balk at giveaways.

Lance Armstrong's brand weathers rough week.

LinkedIn eyes business opportunities in China.

Martha Stewart's company names new top execs, explores sale.

Morgan Stanley permits social marketing, lets brokers use Twitter and LinkedIn.

Nestle, McDonald's and Whole Foods raise prices to cover food inflation.

Nike's Jordan brand taps first female ambassador in Maya Moore.

Ricoh plans to cut 10,000 jobs.

Twitter confirms TweetDeck acquisition.

Unilever raises prices in China.