We kicked off MIX10 this morning to a packed house of designers and developers who are building the world’s most innovative consumer-facing and enterprise Web and desktop applications. Attendees come from around the world and represent top web sites, web start-ups, interactive agencies and other organizations that do business on the Web. And with the wealth of new announcements about Windows Phone 7 Series and Silverlight today, the energy onsite is electric as developers look forward taking everything they’ll learn this week to develop next generation applications for the Web, desktop and devices in the coming months.