Today in Mobile

There’s a lot of news coming out of Mobile World Congress’s opening day in Barcelona — InformationWeek has a pretty good roundup here — but perhaps the day’s biggest development is this Wall Street Journal piece documenting how AT&T is considering charging developers for the data consumers use via their apps. My colleague Stacey Higginbotham responds by noting that such a strategy could stifle innovation by making the cost of building a great app substantially higher. But I think the biggest problem with the plan would be in the execution: Many of us use third-party apps or the web to access, say, Twitter or Facebook, rather than going directly to the app itself. Trying to figure out whom to bill for which specific activity could be much more costly in the long run than simply billing users for their data usage.