Amazon Mum As Kindle Phone Rumors Swirl

10 Great Summer iPad Apps (click image for larger view and for slideshow) Amazon may be developing its own smartphone--with help from some former Microsoft employees. Robert Williams, formerly a Microsoft senior program manager, used his Twitter feed this week to let the world know that he had bolted from the Redmond campus to downtown Seattle, where Amazon calls home. "Working on a top-secret project called, oops, gotta go," Williams . More Hardware Insights Webcasts More White Papers More Reports More Williams is the second high-profile member of Microsoft's mobile team to defect to Amazon in recent months.