diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -47,7 +47,7 @@
     'rsrc/css/application/config/unhandled-exception.css' => '37d4f9a2',
     'rsrc/css/application/conpherence/durable-column.css' => '2e68a92f',
     'rsrc/css/application/conpherence/menu.css' => 'f389e048',
-    'rsrc/css/application/conpherence/message-pane.css' => '3150e2a2',
+    'rsrc/css/application/conpherence/message-pane.css' => '0e75feef',
     'rsrc/css/application/conpherence/notification.css' => 'd208f806',
     'rsrc/css/application/conpherence/transaction.css' => '885433f0',
     'rsrc/css/application/conpherence/update.css' => '1099a660',
@@ -514,7 +514,7 @@
     'config-welcome-css' => '6abd79be',
     'conpherence-durable-column-view' => '2e68a92f',
     'conpherence-menu-css' => 'f389e048',
-    'conpherence-message-pane-css' => '3150e2a2',
+    'conpherence-message-pane-css' => '0e75feef',
     'conpherence-notification-css' => 'd208f806',
     'conpherence-thread-manager' => '9e507b59',
     'conpherence-transaction-css' => '885433f0',
diff --git a/src/applications/conpherence/controller/ConpherenceListController.php b/src/applications/conpherence/controller/ConpherenceListController.php
--- a/src/applications/conpherence/controller/ConpherenceListController.php
+++ b/src/applications/conpherence/controller/ConpherenceListController.php
@@ -25,6 +25,10 @@
     return $mode;
   }
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $user = $request->getUser();
     $title = pht('Conpherence');
diff --git a/src/applications/conpherence/controller/ConpherenceNewController.php b/src/applications/conpherence/controller/ConpherenceNewController.php
--- a/src/applications/conpherence/controller/ConpherenceNewController.php
+++ b/src/applications/conpherence/controller/ConpherenceNewController.php
@@ -42,9 +42,8 @@
           }
         }
       } else {
-        $uri = $this->getApplicationURI($conpherence->getID());
         return id(new AphrontRedirectResponse())
-          ->setURI($uri);
+          ->setURI('/'.$conpherence->getMonogram());
       }
     } else {
       $participant_prefill = $request->getStr('participant');
diff --git a/src/applications/conpherence/controller/ConpherenceNewRoomController.php b/src/applications/conpherence/controller/ConpherenceNewRoomController.php
--- a/src/applications/conpherence/controller/ConpherenceNewRoomController.php
+++ b/src/applications/conpherence/controller/ConpherenceNewRoomController.php
@@ -36,9 +36,8 @@
           ->setActor($user)
           ->applyTransactions($conpherence, $xactions);
 
-        $uri = $this->getApplicationURI($conpherence->getID());
         return id(new AphrontRedirectResponse())
-                    ->setURI($uri);
+          ->setURI('/'.$conpherence->getMonogram());
       } catch (PhabricatorApplicationTransactionValidationException $ex) {
         $validation_exception = $ex;
 
diff --git a/src/applications/conpherence/controller/ConpherenceRoomListController.php b/src/applications/conpherence/controller/ConpherenceRoomListController.php
--- a/src/applications/conpherence/controller/ConpherenceRoomListController.php
+++ b/src/applications/conpherence/controller/ConpherenceRoomListController.php
@@ -2,6 +2,10 @@
 
 final class ConpherenceRoomListController extends ConpherenceController {
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $user = $request->getUser();
 
diff --git a/src/applications/conpherence/controller/ConpherenceUpdateController.php b/src/applications/conpherence/controller/ConpherenceUpdateController.php
--- a/src/applications/conpherence/controller/ConpherenceUpdateController.php
+++ b/src/applications/conpherence/controller/ConpherenceUpdateController.php
@@ -251,7 +251,7 @@
           case 'redirect':
           default:
             return id(new AphrontRedirectResponse())
-              ->setURI($this->getApplicationURI($conpherence->getID().'/'));
+              ->setURI('/'.$conpherence->getMonogram());
             break;
         }
       }
diff --git a/src/applications/conpherence/controller/ConpherenceViewController.php b/src/applications/conpherence/controller/ConpherenceViewController.php
--- a/src/applications/conpherence/controller/ConpherenceViewController.php
+++ b/src/applications/conpherence/controller/ConpherenceViewController.php
@@ -5,6 +5,10 @@
 
   const OLDER_FETCH_LIMIT = 5;
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $user = $request->getUser();
 
@@ -138,7 +142,7 @@
       $conpherence,
       PhabricatorPolicyCapability::CAN_JOIN);
     $participating = $conpherence->getParticipantIfExists($user->getPHID());
-    if (!$can_join && !$participating) {
+    if (!$can_join && !$participating && $user->isLoggedIn()) {
       return null;
     }
     $draft = PhabricatorDraft::newFromUserAndKey(
@@ -147,9 +151,20 @@
     if ($participating) {
       $action = ConpherenceUpdateActions::MESSAGE;
       $button_text = pht('Send');
-    } else {
+    } else if ($user->isLoggedIn()) {
       $action = ConpherenceUpdateActions::JOIN_ROOM;
       $button_text = pht('Join');
+    } else {
+      // user not logged in so give them a login button.
+      $login_href = id(new PhutilURI('/auth/start/'))
+        ->setQueryParam('next', '/'.$conpherence->getMonogram());
+      return id(new PHUIFormLayoutView())
+        ->addClass('login-to-participate')
+        ->appendChild(
+          id(new PHUIButtonView())
+          ->setTag('a')
+          ->setText(pht('Login to Participate'))
+          ->setHref((string)$login_href));
     }
     $update_uri = $this->getApplicationURI('update/'.$conpherence->getID().'/');
 
@@ -157,10 +172,10 @@
 
     $form =
       id(new AphrontFormView())
+      ->setUser($user)
       ->setAction($update_uri)
       ->addSigil('conpherence-pontificate')
       ->setWorkflow(true)
-      ->setUser($user)
       ->addHiddenInput('action', $action)
       ->appendChild(
         id(new PhabricatorRemarkupControl())
diff --git a/src/applications/conpherence/controller/ConpherenceWidgetController.php b/src/applications/conpherence/controller/ConpherenceWidgetController.php
--- a/src/applications/conpherence/controller/ConpherenceWidgetController.php
+++ b/src/applications/conpherence/controller/ConpherenceWidgetController.php
@@ -13,6 +13,10 @@
     return $this->userPreferences;
   }
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $request = $this->getRequest();
     $user = $request->getUser();
@@ -26,6 +30,9 @@
       ->withIDs(array($conpherence_id))
       ->needWidgetData(true)
       ->executeOne();
+    if (!$conpherence) {
+      return new Aphront404Response();
+    }
     $this->setConpherence($conpherence);
 
     $this->setUserPreferences($user->loadPreferences());
@@ -138,8 +145,11 @@
         PhabricatorPolicyCapability::CAN_JOIN);
       if ($can_join) {
         $text = pht('Settings are available after joining the room.');
-      } else {
+      } else if ($viewer->isLoggedIn()) {
         $text = pht('Settings not applicable to rooms you can not join.');
+      } else {
+        $text = pht(
+          'Settings are available after logging in and joining the room.');
       }
       return phutil_tag(
         'div',
diff --git a/src/view/form/PHUIFormLayoutView.php b/src/view/form/PHUIFormLayoutView.php
--- a/src/view/form/PHUIFormLayoutView.php
+++ b/src/view/form/PHUIFormLayoutView.php
@@ -7,6 +7,7 @@
  */
 final class PHUIFormLayoutView extends AphrontView {
 
+  private $classes = array();
   private $fullWidth;
 
   public function setFullWidth($width) {
@@ -14,6 +15,11 @@
     return $this;
   }
 
+  public function addClass($class) {
+    $this->classes[] = $class;
+    return $this;
+  }
+
   public function appendInstructions($text) {
     return $this->appendChild(
       phutil_tag(
@@ -38,7 +44,8 @@
   }
 
   public function render() {
-    $classes = array('phui-form-view');
+    $classes = $this->classes;
+    $classes[] = 'phui-form-view';
 
     if ($this->fullWidth) {
       $classes[] = 'phui-form-full-width';
diff --git a/webroot/rsrc/css/application/conpherence/message-pane.css b/webroot/rsrc/css/application/conpherence/message-pane.css
--- a/webroot/rsrc/css/application/conpherence/message-pane.css
+++ b/webroot/rsrc/css/application/conpherence/message-pane.css
@@ -113,6 +113,14 @@
   right: 241px;
 }
 
+.conpherence-message-pane .phui-form-view.login-to-participate {
+  height: 28px;
+}
+
+.conpherence-message-pane .login-to-participate a.button {
+  float: right;
+}
+
 .conpherence-message-pane .aphront-form-control-submit button,
 .conpherence-message-pane .aphront-form-control-submit a.button {
   margin-top: 6px;