<H1>More Merger Murmurs</H1> The keynote speaker at Galileo International's annual user conference in Madrid this month will be Dr. Nathan Myhrvold, Microsoft's senior vice president and purported second-in-command to Bill Gates. Insiders noted that appearance with interest in light of the recent alliance between Microsoft and Worldspan and ongoing rumors about a Galileo/Worldspan merger (BTN, March 18). Meanwhile, Worldspan Travel Information Services is moving to larger premises in Rome, Frankfurt and London, and opening new offices in Romania and Riyadh, Saudi Arabia as part of a decision to grow its locations in Europe, the Middle East and Africa by 17 percent.