Desktop Social Networking App Development

I need a desktop application that lets users interact in a social-network style environment. The core idea is to give people a place to create a profile, search for others, connect, and share updates—everything packaged in an installer that runs natively on Windows... (Budget: $15 - $25 USD, Jobs: .NET, App Development, C# Programming, C++ Programming, Desktop Application, Software Architecture, UI / User Interface, WPF)