diff --git a/flag.info.inc b/flag.info.inc
new file mode 100644
index 0000000..3e6e55e
--- /dev/null
+++ b/flag.info.inc
@@ -0,0 +1,84 @@
+<?php
+
+/**
+ * @file Contains Entity API property information.
+ */
+
+/**
+ * Implements hook_entity_property_info_alter().
+ */
+function flag_entity_property_info_alter(&$info) {
+  foreach (flag_get_flags() as $flag) {
+    $info['user']['properties']['flag_' . $flag->name . '_flagged'] = array(
+      'label' => t('Flagged @entity-type with flag @flag', array('@entity-type' => $flag->entity_type, '@flag' => $flag->name)),
+      'description' => t('Returns a list of entities a user flagged with flag @flag.', array('@flag' => $flag->name)),
+      'type' => 'list<' . $flag->entity_type . '>',
+      'getter callback' => 'flag_properties_get_flagged_content',
+      'computed' => TRUE,
+      'flag_name' => $flag->name,
+    );
+    if (count($flag->types)) {
+      // Bundle specific property.
+      foreach ($flag->types as $type) {
+        $info[$flag->entity_type]['bundles'][$type]['properties']['flag_' . $flag->name . '_user'] = flag_entity_property_user_definition($type, $flag);
+      }
+    }
+    else {
+      // Generic property, applies for all bundles.
+      $info[$flag->entity_type]['properties']['flag_' . $flag->name . '_user'] = flag_entity_property_user_definition($flag->entity_type, $flag);
+    }
+  }
+}
+
+
+/**
+ * Helper function that returns the entity property definition for user who
+ * flagged a certain entity.
+ *
+ * @param $type
+ *   The type can either be the bundle or the entity type.
+ * @param $flag
+ *   The flag object.
+ *
+ * @return
+ *   An array containg the property information.
+ */
+function flag_entity_property_user_definition($type, $flag) {
+  return array(
+    'label' => t('Users who flagged the @type with flag @flag', array('@type' => $type, '@flag' => $flag->name)),
+    'description' => t('Returns a list of users who flagged an enttiy with flag @flag.', array('@flag' => $flag->name)),
+    'type' => 'list<user>',
+    'getter callback' => 'flag_properties_get_flagging_users',
+    'computed' => TRUE,
+    'flag_name' => $flag->name,
+  );
+}
+
+/**
+ * Getter callback that returns entities the user flagged.
+ */
+function flag_properties_get_flagged_content($entity, array $options, $name, $entity_type, $property_info) {
+  $flag = flag_get_flag($property_info['flag_name']);
+
+  $result = db_select('flagging', 'f')
+    ->fields('f', array('entity_id'))
+    ->condition('fid', $flag->fid)
+    ->condition('uid', $entity->uid)
+    ->execute();
+  return $result->fetchCol();
+}
+
+/**
+ * Getter callback that returns users who flagged an entity.
+ */
+function flag_properties_get_flagging_users($entity, array $options, $name, $entity_type, $property_info) {
+  $flag = flag_get_flag($property_info['flag_name']);
+
+  $result = db_select('flagging', 'f')
+    ->fields('f', array('uid'))
+    ->condition('fid', $flag->fid)
+    ->condition('entity_id', $flag->get_entity_id($entity))
+    ->condition('uid', 0, '!=')
+    ->execute();
+  return $result->fetchCol();
+}
diff --git a/flag.module b/flag.module
index 5c2a196..54cd329 100644
--- a/flag.module
+++ b/flag.module
@@ -5,6 +5,10 @@
  * The Flag module.
  */
 
+// Manually include the properties info file, because it contains the properties
+// getter callbacks.
+require_once 'flag.info.inc';
+
 define('FLAG_API_VERSION', 3);
 
 define('FLAG_ADMIN_PATH', 'admin/structure/flags');