The U.S. has passed a milestone in telecommunications history--the percentage of Americans in cellphone-only households now exceeds the percentage of people living in landline-only households, according to Mediamark Research Inc. This is one of the key findings in The Birth of a Cellular Nation, a newly released MRI white paper.

According to The NPD Group mobile phone sales to consumers in the U.S. reached 33 million units in the second quarter of 2007.

But one mobile strategy will not reach all users.

Hispanic Americans are the fastest-growing and youngest US mobile segment, with the highest average revenue per user of any demographic group, according to Telephia's "Q2 2007 Mobile Hispanic Report," cited in RCR News.

Telephia also found that US Hispanics were nearly twice as likely as non-Hispanics to access wireless Internet through their phones.

Cellfire, a nationwide mobile discount offer and coupon service, released key findings regarding mobile coupon redemption, including the top 10 cities in America that are super savers. Miami-Fort Lauderdale tops the list of markets with the highest per capita usage of mobile coupons, with Northern California and Texas taking the majority of the remaining top spots.

One of the great things about covering a nascent industry like mobile marketing is that there are so many questions that have no answers.

The PC's killer app meets the small screen.

According to a new survey released by Ingenio, Inc., more than four out of five U.S. adults surveyed (85 percent) currently own a mobile phone compared to only about seven in ten (71 percent) who have a landline or home phone. Of the overwhelming majority of U.S. consumers that own a mobile phone, the study finds that only a minority of mobile phone owners (30 percent) can recall seeing or hearing an advertisement on their mobile phone in the past year.

Would you watch ads for a free phone?

Mobile advertising will generate $2.3 billion in revenues in the US by 2011, according to EJL Wireless Research's "Global Mobile Advertising Market Analysis 2006-2011."

This year, banks and wireless service providers are rolling out products that let customers check account balances, pay bills, transfer money and receive alerts about deposits and payments by mobile phone.

Internet via the mobile phone has taken off, but perhaps not at a level that satisfies the network operators. Overall, 29 percent of adults in Great Britain have ever used their mobile phone to access the internet.

SUR is now part of the channel lineup for MobiTV en Español, one of many MobiTV services. MobiTV en Español turns your cell phone into a portable television, with a combination of programming in English and Spanish, including more than 15 of the most popular networks.

comScore released the results of a study analyzing Americans' usage of, and attitudes toward, Mobile TV, which is defined as television watched via a mobile phone device (either live or on-demand). The study, based on a survey of more than 2,000 mobile phone users, revealed that nearly two out of three Mobile TV subscribers are male and that nearly half are below the age of 35. Also included in the study are insights about consumer behavior and attitudes toward Mobile TV, including information on product awareness, programming content, and key purchase motivators.

CTIA Wireless announced three key principles of mobile marketing. The principles are a guide for mobile operators preparing to capitalize on mobile marketing opportunities.

Interactive mobile marketing, which prompts consumers to respond to advertising messages using their mobile devices, is a vast new frontier that has elevated direct marketing to supreme new heights.