Today at their Bing Fall Release event , Microsoft showed off some nice updates to their search engine, including further information about how the much anticipated Twitter and Facebook data integration will work. But by far the most interesting thing they showed was the new beta version of Bing Maps. While it looked very nice, the real reason why it was so interesting is what it requires: Silverlight . This news comes just days after Google's revelation (thanks, in part, to our story on the upcoming Chrome for Mac beta) that they were backing away from supporting Gears in the future, in favor of HTML5. Gears is the software that Google created to allow users to use their applications while not connected to the web. But it's also a plug-in (for all browsers except Google's own Chrome for the PC). This is a big barrier to entry for many users. And it's something that creates problems developing apps around it if say, a user doesn't have Gears installed. So it's good to see Google step away from a plug-in even if it's no longer proprietary (originally called "Google Gears," they have since open-sourced it). And it makes what Microsoft is doing even more frustrating.