I'm getting an increasing number of requests which don't even reach the app, but show a Google error page.
Error 404 (Not Found)!!1 -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/d6b6f089-b1fb-4b53-bc4f-a95d9ca5877a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.