“The study, released on Monday by researchers Victor Stango and Christopher Knittel, gave an estimate for damage to the market value of Woods’ main sponsors caused by revelations of alleged extramarital affairs that surfaced after he was involved in a minor car accident outside his Florida home on November 27. ‘We estimate that shareholders of Tiger Woods’ sponsors lost $5-12 billion after his car accident, relative to shareholders of firms that Mr. Woods does not endorse,’ the researchers wrote, adding that millions of shareholders were affected.” Link

“The Xbox 360 gaming system, sold by the Microsoft Corporation, is being endorsed by the Jonas Brothers rock band in a campaign that appears in properties owned by the brothers’ media partner, the Walt Disney Company. Xbox 360 joins a short list of brands to be promoted by the Jonases, whose music appeals to the teenagers, preteenagers and mothers composing the target audience for the gaming system.” Link

“Kim Kardashian, Joel McHale, Dr. Drew, Nicole Richie and husband Joel Madden and Audrina Patridge from ‘The Hills’ are just a few of the names who have endorsement deals for their Twitter accounts. The celebs are signing onto a new viral marketing strategy set up by the Los Angeles-based ad agency Ad.ly, which brokers relationships with the advertisers.” Link

“A Las Vegas strip club has agreed to stop an advertising promotion in which it hauled bikini-clad exotic dancers around in a truck with clear plastic sides. Marketing Director Larry Beard of Deja Vu Showgirls told The Associated Press on Friday that he’s taking his lawyer’s advice and parking the truck.” Link