diff --git a/db/add.php b/db/add.php
index 3c6a8db28c92fca00d3ed17fb4d8a9d3b7d78b54..80f67de0ab2060c8e50fab6f70f13a71898754ef 100644
--- a/db/add.php
+++ b/db/add.php
@@ -1,9 +1,36 @@
 <?php
  include('config.php');
+if (!$_POST['url']){
+  echo "no url given";
+ die;
+}
+if (!$_POST['email']){
+  echo "no email given";
+ die;
+}
+if (!$_POST['domain']){
+  echo "no pod domain given";
+ die;
+}
+
  $dbh = pg_connect("dbname=$pgdb user=$pguser password=$pgpass");
      if (!$dbh) {
          die("Error in connection: " . pg_last_error());
      }
+ $sql = "SELECT domain,pingdomurl FROM pods";
+ $result = pg_query($dbh, $sql);
+ if (!$result) {
+     die("Error in SQL query: " . pg_last_error());
+ }
+ while ($row = pg_fetch_array($result)) {
+if ($row["domain"] == $_POST['domain']) {
+echo "domain already exists";die;
+}
+if ($row["pingdomurl"] == $_POST['url']) {
+echo "pingdom report already exists";die;
+}
+ }
+
     
      $pingdomurl = pg_escape_string($_POST['url']);
      $domain = pg_escape_string($_POST['domain']);
diff --git a/db/show.php b/db/show.php
index 127848103ad12ac4680c737db717e0ff42fbd196..3e7e502fa70f821e35cfe709072c1d94b7ebd53b 100644
--- a/db/show.php
+++ b/db/show.php
@@ -19,7 +19,7 @@ od last updated from the main Diaspora code.">?</a></th>
  if (!$dbh) {
      die("Error in connection: " . pg_last_error());
  }  
- $sql = "SELECT * FROM pods";
+ $sql = "SELECT * FROM pods WHERE hidden <> 'no'";
  $result = pg_query($dbh, $sql);
  if (!$result) {
      die("Error in SQL query: " . pg_last_error());
diff --git a/db/tables.sql b/db/tables.sql
index 10e12bf78fef494f49da9713036a00f4b345e9a0..82f0dd4e2e87caf2162303b17afbfab8f74b9ada 100644
--- a/db/tables.sql
+++ b/db/tables.sql
@@ -2,7 +2,7 @@ CREATE TABLE pods (
  id serial8 UNIQUE PRIMARY KEY,
  domain text UNIQUE NOT NULL,
  whois text,
- hidden text DEFAULT 'no',
+ hidden text DEFAULT 'yes',
  ip cidr,
  ptr text,
  email text,