From southwest.com: Are you a Macintosh user whos been anxiously awaiting the chance to download DING! to your desktop? Well, wait no more, because DING! for Mac is here! Beginning March 20, 2006, Mac users can download DING! and start receiving Southwest Airlines hottest deals delivered directly to your desktop! Plus, if you download and install DING! for Windows or Mac between March 20 and April 3, 2006 and keep it on your desktop for 30 days, well deposit two Rapid Rewards credits into your account! Plus, It's Universal!