diff --git a/static/cosmopolite.js b/static/cosmopolite.js
index c57dbc4..adf5e0f 100644
--- a/static/cosmopolite.js
+++ b/static/cosmopolite.js
@@ -14,6 +14,18 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// We use long keys in many places. Provide a method to trim those down for
+// human readability.
+String.prototype.hashCode = function() {
+  var hash = 0;
+  for (i = 0; i < this.length; i++) {
+    var char = this.charCodeAt(i);
+    hash = ((hash << 5) - hash) + char;
+    hash = hash & hash;
+  }
+  return hash;
+};
+
 var cosmopolite = {};
 
 cosmopolite.Client = function(opt_callbacks, opt_urlPrefix, opt_namespace) {
diff --git a/static/debug.html b/static/debug.html
index 36d3b72..a04be86 100644
--- a/static/debug.html
+++ b/static/debug.html
@@ -73,7 +73,7 @@ var addMessage = function(message) {
   var messageDiv = document.createElement('div');
   messageDiv.innerHTML = (
     (new Date(message['created'] * 1000)).toString() +
-    ' &lt;' + message['sender'] + '&gt; ' +
+    ' &lt;????-' + (Math.abs(message['sender'].hashCode()) % 10000) + '&gt; ' +
     message['message']
   );
   messages.appendChild(messageDiv);