Good news, folks -- Tango is about to reach Windows Phone. No, not that Tango . We're referring to the video calling service that's already popular on iOS and Android devices, but has had absolutely no presence on Microsoft's platform at all. Of course, there's a blatantly obvious reason for that: the OS didn't support front-facing cameras until Mango came along. At this week's unveiling of HTC's first WP7.5 devices , someone perusing the Radar's software happened across a Tango app in the Start menu, indicating users will have more video chatting options to choose from than just Skype. Better yet, it appears to offer cross-platform compatibility to ensure you can see your Android-toting pals and your iPhone-equipped in-laws up close and personal. We're ecstatic to see the feature finally ready to go with Mango's debut, but unfortunately it's only a matter of time before the name confusion settles in.