Public user profile page shows if the user is suspended and why.

app/assets/javascripts/admin/templates/modal/admin_suspend_user.js.handlebars

@@ -2,9 +2,9 @@
   <form>
     {{i18n admin.user.suspend_duration}}
     {{textField value=duration maxlength="5" autofocus="autofocus" class="span2"}}
-    {{i18n admin.user.suspend_duration_units}}
+    {{i18n admin.user.suspend_duration_units}}<br/>
     <br/>
-    {{i18n admin.user.suspend_reason_label}}
+    {{{i18n admin.user.suspend_reason_label}}}<br/>
     <br/>
     {{textField value=reason class="span8"}}
   </form>

app/assets/javascripts/discourse/models/user.js

@@ -97,6 +97,12 @@ Discourse.User = Discourse.Model.extend({
     return Discourse.Site.currentProp('trustLevels').findProperty('id', parseInt(this.get('trust_level'), 10));
   }.property('trust_level'),
 
+  isSuspended: Em.computed.equal('suspended', true),
+
+  suspendedTillDate: function() {
+    return Discourse.Formatter.longDate(this.get('suspended_till'));
+  }.property('suspended_till'),
+
   /**
     Changes this user's username.
 

app/assets/javascripts/discourse/templates/user/user.js.handlebars

@@ -42,6 +42,14 @@
           <h2>{{name}}</h2>
 
           <div class='bio'>{{{bio_excerpt}}}</div>
+
+          {{#if isSuspended}}
+            <div class='suspended'>
+              <i class='icon icon-ban-circle'></i>
+              <b>{{i18n user.suspended_notice date="suspendedTillDate"}}</b><br/>
+              <b>{{i18n user.suspended_reason}}</b> {{suspend_reason}}
+            </div>
+          {{/if}}
           </div>
 
           <div class='secondary'>

app/assets/stylesheets/desktop/user.scss

@@ -166,6 +166,10 @@
         background-color: white;
       }
 
+      .suspended {
+        color: #f77;
+      }
+
       .primary {
         margin-top: 20px;
         float: left;

app/serializers/user_serializer.rb

@@ -17,7 +17,10 @@ class UserSerializer < BasicUserSerializer
              :trust_level,
              :moderator,
              :admin,
-             :title
+             :title,
+             :suspended,
+             :suspend_reason,
+             :suspended_till
 
   has_one :invited_by, embed: :object, serializer: BasicUserSerializer
 
@@ -96,4 +99,18 @@ class UserSerializer < BasicUserSerializer
     SiteSetting.enable_names?
   end
 
+  def suspended
+    object.suspended?
+  end
+
+  def include_suspended?
+    object.suspended?
+  end
+  def include_suspend_reason?
+    object.suspended?
+  end
+  def include_suspended_till?
+    object.suspended?
+  end
+
 end

config/locales/client.en.yml

@@ -216,6 +216,8 @@ en:
       moderator: "{{user}} is a moderator"
       admin: "{{user}} is an admin"
       deleted: "(deleted)"
+      suspended_notice: "This user is suspended until {{date}}."
+      suspended_reason: "Reason: "
 
       messages:
         all: "All"
@@ -1339,9 +1341,9 @@ en:
       user:
         suspend_failed: "Something went wrong suspending this user {{error}}"
         unsuspend_failed: "Something went wrong unsuspending this user {{error}}"
-        suspend_duration: "How long would you like to suspend the user for?"
+        suspend_duration: "How long will the user be suspended for?"
         suspend_duration_units: "(days)"
-        suspend_reason_label: "Why are you suspending? When the user tries to log in, they will see this text. Keep it short."
+        suspend_reason_label: "Why are you suspending? This text <b>will be visible to everyone</b> on this user's profile page, and will be shown to the user when they try to log in. Keep it short."
         suspend_reason: "Reason"
         suspended_by: "Suspended by"
         delete_all_posts: "Delete all posts"