Today in mobile marketing:

Google eyes big change in online tracking for ads
Google, the world's largest Internet search company, is considering a major change in how online browsing activity is tracked, a move that could shake up the $120 billion digital advertising industry, according to USA Today.
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For Twitter, key to revenue is no longer ad simplicity
When it comes to making money, Twitter is all about keeping it simple, per the New York Times.
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T-Mobile scolded for ad campaign against AT&T
T-Mobile may have gone too far with its claims against AT&T, according to CNet. The National Advertising Division has rebuked T-Mobile for several statements made in its advertising campaign, and has issued a statement calling for the ads to be pulled or changed.
Click here to read the entire article on CNet

UK to test location-based mobile emergency alert systems
This autumn, the UK government will trial two emergency message alert systems that target mobile devices based on their location, ZDNet reports.
Click here to read the entire article on ZDNet