A curated selection of the weekend's newsworthy tech stories from all around the Web. Read on, and join the conversation with a comment below.

"We learned that you can't rely on anyone else to control and maintain your own brand."
-- Groupon CEO Andrew Mason on its controversial Super Bowl ad. (Ad Age)

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  Photo: Engadget

  AT&T plans to buy T-Mobile USA for $39 billion, a deal that would make the former the largest mobile U.S. carrier and the only carrier stateside to use Global System for Mobile (GSM) technology -- it will also bring the number of major national wireless carriers down from four to three. The transition, which will take 12 months to happen if U.S. regulatory agencies don't put up a fight, will also give T-Mobile USA owner Deutsche Telekom some 8% of the newly-combined AT&T. (What say you, Fortune readers? Is AT&T's move a stroke of brilliance or an ominous sign of things to come in the mobile market? Sound off in the comments below.) (Fortune)

• If AT&T's acquisition of T-Mobile USA goes through, it will leave Sprint in a precarious position as a distant third. The company will face a real problem if and when it needs to transition from its current WiMAX-based fourth-generation (4G) network technologies to Long-Term Evolution (LTE), a technology AT&T and Verizon are implementing into their own networks over the next two years. LTE's rise will give even more power to AT&T and Verizon as enterprises and consumers will likely want to carry devices that support the dominant standard. (Fortune) More