I've received a heads-up through email. Thanks casey! Here's the gist of it:

Cellfire, the first-ever nationwide mobile couponing application, announced its optimized service is now available on all U.S. released phones equipped with Windows Mobile®, Microsoft's mobile software platform.

As one of the featured applications available on Windows Mobile®, Cellfire's service will instantly connect Smartphone and Pocket PC users to its wide variety of exclusive discounts to the nation's top merchants...[including] Hollywood Video, Hardee's, T.G.I. Friday's, 1-800-flowers.com, Omaha Steaks, Conde Nast Publications, North Beach Pizza, Pizz'a Chicago, and Red Rock Coffee.

In short, Cellfire's services are now available for Windows Mobile Smartphones and Pocket PCs. The point I made before still stands: offering virtual coupons over the net is a subtle way of getting subscribers to use their data plans. Not to mention it's marketing for the "nation's top merchants."

There's nothing wrong with that, especially if Cellfire's coupons provide big discounts. Just know that discount coupons, real or digital, are a great incentive for customers to spend their money...when they didn't plan to in the first place.