Phew! We've been following the evolution of eBuddy XMS on Windows Phone since inception. The once ugly duckling app is now a beautiful and powerful alternative to the native Threads feature built into Windows Phone.
We're now hearing from the team that an update is propagating through the Marketplace, enabling 30-way group messaging across iOS, Android, BlackBerry, and Windows Phone devices! (If your friends are still rocking Nokia s40/s60 devices, they have to wait a little longer.)