WASHINGTON (AP) â¿¿ Federal regulators have begun a formal antitrust investigation into Google's business practices. In a blog post Friday, the Internet search giant said it received notification from the Federal Trade Commission of the review on Thursday. Google said "it's still unclear exactly what the FTC's concerns are." But the inquiry is expected to focus in large part on whether Google abuses its dominance of Internet search to extend its influence into other lucrative online markets, such as mapping, comparison shopping and travel. Rivals complain that Google, which handles two out of every three Internet searches in the U.S., manipulates its results to steer users to its own sites and services and bury links to competitors. ___ CEO Interview: Southwest co-founder Herb Kelleher DALLAS (AP) â¿¿ Herb Kelleher dressed up as Elvis, wore a paper bag over his head on TV, bragged about drinking Wild Turkey and told bawdy stories. Between the legendary bouts of showmanship he found time to revolutionize the airline industry. Kelleher was there at the founding of Southwest Airlines Co., fighting the legal battles to get the airline started. As CEO for two decades, he built an airline that now carries more U.S. passengers than any other. Most U.S. airlines lose money more often than they earn it, but Southwest has always posted an annual profit. It's been a decade since Kelleher, now 80, retired as CEO and three years since he stepped down as chairman, but he still shows up at the office most days. He gives advice when the current CEO, Gary Kelly, asks for it. Recently, Kelleher sat down in his office for an interview with The Associated Press. ___ Brazen, publicity-seeking hackers on attack spree LONDON (AP) â¿¿ Can you be famous if no one knows your name? A new band of hackers is giving it its best shot, trumpeting its cyber-capers in an all-sirens-flashing publicity campaign.