I'd like to attach the location of the user to a TWRequest. I've tried to modify the url (with something like this: "http://api.twitter.com/1/statuses/update.json?lat=37.76893497&long=-122.42284884") but the response was "401 Unauthorized" or "400 Bad Request". My TWRequest: TWRequest *postRequest = [[TWRequest alloc] initWithURL: [NSURL URLWithString:@"http://api.twitter.com/1/statuses/update.jso