I wrote a Myspace REST library that I'm hoping to use to make all REST calls directly from flash and bypassing a backend script such as .net or PHP.  I have the GET calls working no problem, but when attempting to implement the POST notifications call it fails.  I've been comparing my call using the OAUTH tool and get the same signature and URI as the OAUTH tool.  When my Flash app makes a call, I track the request/response using Charles Web Debugging Proxy and can see that the request seems well-formed, but I don't see a response.  When tracing, I can see that there is a response, but as far as I can tell, the server HTTP response code is 0?  Has anybody else been able to make a REST notifications call directly from Flash?