This app looks pretty nice!
I'll be giving it a try when I'm on a system that I can try it on.
I had been thinking of building apps that integrate on the desktop before but never found a good solution to making the app and the desktop essentially the same layer.
IE: If you click elsewhere on the desktop the app should still be usable but if you open a different application the app and the desktop should lose focus but keep their locations.
It sounds like you found a way to manage it, though I haven't been able to test it yet.
I assume you used C# considering the usage of .NET?
Anyway, props on a cool app.