Yeah, but others were as well, it was obvious to anyone who understood both SGML and the Web. Mind you, there were only maybe a dozen people in the world like that.
BTW, it's mentioned in another thread above that you're not sending a Content-Type header — are you doing that on purpose? I haven't tried doing that since HTTP/0.9 days and I'm surprised it works (i.e., that modern browsers sniff the body and render it as HTML).