GNU Java does not implement POSTing on a URLConnection. Thanks, GNU project, for letting me bash my head on that one for a while. I have to learn to stop trusting GCJ's implementation. Okay, this isn't too bad. I'll just have to use sockets instead of a URLConnection.Update
Hell yeah! With sockets, I just logged in successfully to kvance, with my user record copied (by hand :P) into the java conduit. Now, to see if the post thing works.