By Christopher RhoadsWorried that your broadband provider is slowing down your Web traffic?If so, you might want to download the aptly named "Switzerland" -- a tool that tests whether your Internet provider is violating the principles of so-called "network neutrality."Network neutrality, which prevents carriers from blocking traffic or manipulating the speeds of traffic from certain Web sites, became a hot-button issue several years ago when carriers suggested they should be allowed to charge content providers more for using faster lanes on their networks. The issue resurfaced last summer when the FCC determined that...