Southwest Airlines has upgraded its “Nuts About Southwest” blog to include more interactive features. In addition to the written blog, the new version features a video blog and readers can upload their pictures (on any subjects related to Southwest) at Flickr to be displayed at the top of the homepage. A weekly poll asks readers to vote on topics ranging from serious current issues to silly non-issues and everything in between. The site includes a podcast, a news feed and links to official Southwest-produced videos and photos. Readers can also set up a profile and customize a “My Favorite Feeds” tab to add or remove feeds.