As one of the first Fortune 500 companies to set up a home in the blogosphere over two years ago, Southwest Airlines is making some major upgrades to its blog, Nuts About Southwest.

Nuts About Southwest was originally launched as a means of giving Customers a look inside the culture and operations of Southwest Airlines and allowing them to interact and build personal relationships with the airline’s employees. Over the last two years, the blog’s function has evolved to also serve as a virtual focus group, assisting the Company through crisis and new product launches.

Southwest Vice President of Public Relations and Community Affairs, Linda Rutherford, said “From the debate over assigned seating to the timeframe in which we release our flight schedules, the passionate comments and opinions shared on our blog have unquestionably influenced several business decisions.”

Nuts About Southwest features more than 30 Employee bloggers that represent a mix of Frontline and behind-the-scenes Employees including Mechanics, Customer Service Agents, Schedule Planners, Executives, Marketing Representatives, Flight Attendants, Pilots, and more.

The blog’s readership continues to grow steadily month-over-month, and has more than doubled year-over-year since its launch in Apr-06. The airline estimates that it has reached more than 500,000 customers through Nuts About Southwest alone, and they expect that number to exceed one million in 2008.