Which airline wins the tweet wars for June 2011? Travel tech site Tnooz gives us a stellar infographic on the use of Twitter for major airlines in the month of June 2011. As you can see, Southwest drops to second place this month as industry giant Delta (21,000) mentions, leaps into first place. It’s interesting to note that this data is based on tweets and opinions in a category of interest, not number of followers. @SouthwestAir still wins that battle, with 1,142,579 followers vs. 206,201 for the main @Delta Twitter.