Puttin’ on the Ritz. On Foursquare.

The Ritz-Carlton hotel chain is now offering destination advice via Foursquare. It’s the newest member of a small but growing coterie of luxury brands generating content — and thereby finding value — in location-based social networks.

The Ritz-Carlton’s Foursquare profile now includes dozens of tips about local destinations and landmarks from concierges at its 75 hotels — extending advice previously available only to patrons to anyone with a Foursquare account.

Chris Gabaldon, chief marketing officer of the Ritz-Carlton, says, “The affluent customer today is moving beyond online and into mobile and because they have that capability, they expect brands they know and trust to be available wherever they might look for them.”

Courtesy of Mashable.com

Have a free flight to Mexico with your taco?

Loopt users who checked in to taco trucks or airports in San Francisco and Los Angeles on Tuesday could get two flights to Mexico for the price of one, courtesy of Virgin America.

The promotion, which marked Virgin America’s debut of service from California to Cabo and Cancun, is the latest example of big companies using location-based apps for marketing.

Promotions like Virgin America’s will help people realize the benefits of sharing location, said Sam Altman, Loopt’s chief executive. “That kind of thing pulls people in to location-based services that still have some doubts around privacy,” he said. “I get free tacos in the middle of the day, I get discounted airline tickets, I’m happy.”Or so the company hopes.

Read the entire blog post by Claire Cain Miller of the New York Times: http://bits.blogs.nytimes.com/2010/08/31/have-a-free-flight-to-mexico-with-your-taco/?ref=technology