Eminem's song publisher is suing Facebook and its ad agency, claiming they infringed the Detroit rapper's copyright. In the complaint, filed in Detroit federal court, Ferndale, Mich.-based Eight Mile Style contends that a Facebook ad that was broadcast online April 4 copied music from Eminem's 2000 song "Under the Influence." The 30-second ad, dubbed "Airplane," was featured in a webcast by Facebook chief Mark Zuckerberg to announce Facebook Home, an interface for Android phones. Some viewers at the time noted a similarity between the ad's music and Eminem's song.

At the IBM Smarter Commerce Global Summit in Nashville this week, IBM plans to launch the Watson Engagement Advisor, aimed at helping organizations provide better customer service and product recommendations in real time at scale. The same technology that once outsmarted humans to win Jeopardy and has recently been used to diagnose cancer will now be used to help organizations sense and respond in real time.

Brands as disparate as Coca-Cola and Marmite embraced fan sites. Nutella maker Ferrero has gone the other way, issuing a cease and desist notice to the owner of the unofficial "World Nutella Day" website and social media pages. The company has been branded as "counter intuitive" by social media experts, who warn it could make previous advocates of the brand turn away to competitors.

Macy's is rolling out Americana in a new marketing campaign throughout 850 stores that encircles Independence Day. Classic fashion staples of denim, T-shirts and sneakers are the inspiration for "American Icons," the new campaign that will run through the week of July 4. The effort includes in-store displays, magazine ads, direct-mail catalogs and a charity fundraiser. "It's about driving sales," says Martine Reardon, Macy's chief marketing officer.

Toymaker Mattel has hired a team of interior designers to create three "dream houses" - in New York, California and India - for Barbie and will announce its choice in August. One of the sets is a luxury penthouse overlooking Central Park, designed by Celerie Kemble. "Barbie is a strong, independent woman. She belongs in New York!" Kemble said. "Manhattan is the best of the best for Barbie."

Crappy movies will not be the main U.S. export in coming years. The good news for everyone east of the San Andreas Fault is that industrial machinery will be. A new trade forecast says the merchandise category, which includes everything from large power-generating machinery to small parts for domestic electrical items, will account for 21% of export growth from now until 2015. That's because emerging markets will need specialized goods.

Darden Restaurants Inc. is testing a new bar concept called Atrium that serves a dual-branded Olive Garden/Red Lobster location. The venue, in North Carolina, is not designed to be stand-alone concept. Rich Jeffers, a spokesman for the Orlando, Fla.-based Darden said the company is testing the idea of giving the shared bar area a more unique identity. Since March 2011, Darden has opened six dual-branded locations, which the company calls "synergy units" designed to work in markets that don't have population density to support a single brand location.

For summer travelers, convenience store stops will be part of the trip. According to this month's NACS Consumer Fuels Survey, 85% of vacationers surveyed will be traveling by car and more than four out of five (82%) will be stopping at a c-store along the way. Beside gas purchases, 59% of survey respondents said they will buy drinks, 59% will use the bathroom, and 55% will buy snacks.

Google's driverless car project may turn out to be a gold mine if sentiment research has some predictive power. In a Cisco Customer Experience report, 57% of people surveyed said they would "be likely to ride in a car controlled entirely by technology that does not require a human driver." The survey polled 1,500 people in 10 countries. Respondents in Brazil (96%), India (86%) and China (70%) were most likely to trust a driverless car. In the United States, 60% said they would.

Domino's Brazil is launching a "smellvertising" campaign. A YouTube video explains how a special thermal ink on DVDs rented at stores in Brazil makes the DVD players act like little ovens that trigger a smell of pizza, while turning the image on the discs into pizza as well.