How useful is D

[Lars E.]

The language itself seems to be very interesting. Unfortunately, there 
does not seem to be a single complete and stable GUI toolkit, which is a 
real show stopper - since I can only imagine using D for small GUI 
client apps on the desktop right now (where it beats Java and C# easily 
since it compiles directly to native code and links everything in 
statically - no giant framework download required).

On the server side, it is impratical to not use Apache or IIS to host 
your applications, since most firewalls block anything but port 80, and 
most servers also host web content.

So if you cannot use it on the server side nor on the client side, what 
is it useful for?

Does anyone here use it commercially or do you only toy around with it 
in your spare time?