* HP announced a pretty major executive shake-up yesterday which resulted in Peter Bocian, chief administrative officer, and CIO Randy Mott's immediate departure, and Ann Livermore, executive vice president of HP's Enterprise Business, stepping down to join the board of directors. Meanwhile, EVPs Dave Donatelli, Bill Veghte, and Jan Zadak are all getting promoted and will report directly to CEO Leo Apotheker. (All Things D)

    * As the media hype up news of a potential $100 billion Facebook initial public offering (IPO), colleague Dan Primack argues that we should hold off on all the valuation chatter given that the IPO won't be filed until October or November. (Fortune)

    * Samsung is on track to become the world's largest smartphone manufacturer this quarter, effectively ending Nokia's 15-year streak; next year, Apple will surpass the Finnish handset maker, too, pushing it to third place. (Reuters)

    * Entrepreneur Rocky Agrawal on why Groupon is poised for collapse, and one business owner on why partnering with the daily deals site was "the single worst decision" she ever made. (TechCrunch)

    * How politicians get burned by modern media. (New York Times)

    * Instagram's userbase passed the 5 million mark, a significant achievement considering the photo-sharing service launched just 8 months ago. (TechCrunch)

    * VMWare is reportedly set to acquire Israeli Software as a Service (Saas) company Digital Fuel for $85 million. Current investors of Digital Fuel include Benchmark Capital, Israel Seed Partners, and Apax Partners. (Globes)