Senior Editor Robert Strohmeyer takes to the aisles at Web 2.0 Expo in San Francisco and looks at some of the new tools and services cropping up to make social networking easier. Rummble, for instance, helps your friends track where you are. A Firefox plug-in called Yoono pulls together information from all your social networks. Jygy allows you to manage your social networks from your cell phone. And a site called drop.io lets you distribute your files exactly as you choose.