DING! Your cheap airfare is waiting on Southwest Airlines

As a devoted Macintosh user, I hestitate to mention this cool new Southwest Airlines offering because it only works with Windows machines...ggrrrr. But I'll put my jealosy aside and mention it here anyway. DING! is a small utility that sits quietly on your desktop and alerts you to last-minute and VERY limited-time sales on Southwest flights. And from some of the fares I've seen, the savings can be stunning. If you use a Windows computer, check it out and let me know how it works. Register and download DING!