europeforvisitors - 7:22 pm on Jan 28, 2008 (gmt 0)

Engine, there's a big difference between sending out location-based ads in text messages, e-mails, etc. and having location-based ads on the "Mobile Web." Someone who's searching Google for "doughnut shops" while walking up the Las Vegas Strip is likely to welcome an ad that says "Krispy Kreme, in the Venetian and Excalibur Food Courts."