Despite Windows Phone's falling market share, Microsoft is determined to put a brave face on the platform s marketplace prospects. During a July 11 keynote speech at the company's Worldwide Partner Conference, CEO Steve Ballmer described that market share as "very small," but insisted that other metrics (such as consumer satisfaction) boded well for Windows Phone overall. "Nine out of 10 people who bought Windows Phone would absolutely recommend it to a friend," he said, reiterating a talking point voiced by many a Microsoft executive over the past few months. "People in the phone business seem to believe in us." Nonetheless, for the three-month period between the end of February and the end of May, research firm comScore estimated Microsoft's U.S. share dipping from 7.7 percent to 5.8 percent. If accurate, that comes despite the marketing push behind the Windows Phone platform.