<p>Please review the terms and make sure that your
software adheres to the terms. You should in particular verify that you have set a
-+<b>valid</b> referrer or a user agent that identifies your application, and
+<b>custom HTTP referrer or HTTP user agent</b> that identifies your application, and
that you are not overusing the service with massive bulk requests.</p>
<p>If you feel that this block is unjustified or remains after you have adopted