Skip enqueueing to outgoing bridges on incoming remote messages. Twitter, Facebook, RSSCloud, and OStatus checks were enqueued on these when they'd never do anything but churn the queue servers.

Notice::isLocal() can replace a number of manual checks for $notice->is_local being LOCAL_PUBLIC or LOCAL_NONPUBLIC.

plugins/OStatus/OStatusPlugin.php

@@ -102,8 +102,10 @@ class OStatusPlugin extends Plugin
      */
     function onStartEnqueueNotice($notice, &$transports)
     {
-        // put our transport first, in case there's any conflict (like OMB)
-        array_unshift($transports, 'ostatus');
+        if ($notice->isLocal()) {
+            // put our transport first, in case there's any conflict (like OMB)
+            array_unshift($transports, 'ostatus');
+        }
         return true;
     }