EarthLink has a new Wi-Fi phone, which may be hitting the market this summer. Currently in beta tests, the phone will let you make calls over the Internet through wireless broadband connections. To push this initiative along, EarthLink has been working with a number of cities to establish municipal Wi-Fi networks. The EarthLink phone and the service was designed to be a less expensive alternative for traditional telephone services and, in Wi-Fi hotspots, it can replace your cell phone. EarthLink is investing heavily in the Internet telephony market but faces some stiff competition from other providers such as Vonage and Skype and, across the board acceptance may be more of a long-term goal.