diff --git a/contrib/downtime/main.php b/contrib/downtime/main.php
index 462e530f..63421db8 100644
--- a/contrib/downtime/main.php
+++ b/contrib/downtime/main.php
@@ -26,7 +26,7 @@ class Downtime extends Extension {
 		global $config, $page, $user;
 
 		if($config->get_bool("downtime")) {
-			if(!$user->is_admin() && !$this->is_safe_page($event)) {
+			if(!$user->can("ignore_downtime") && !$this->is_safe_page($event)) {
 				$msg = $config->get_string("downtime_message");
 				$this->theme->display_message($msg);
 				exit;
diff --git a/contrib/featured/main.php b/contrib/featured/main.php
index 5dbc41dd..dda66100 100644
--- a/contrib/featured/main.php
+++ b/contrib/featured/main.php
@@ -29,7 +29,7 @@ class Featured extends Extension {
 		global $config, $page, $user;
 		if($event->page_matches("featured_image")) {
 			if($event->get_arg(0) == "set" && $user->check_auth_token()) {
-				if($user->is_admin() && isset($_POST['image_id'])) {
+				if($user->can("edit_feature") && isset($_POST['image_id'])) {
 					$id = int_escape($_POST['image_id']);
 					if($id > 0) {
 						$config->set_int("featured_id", $id);
@@ -77,7 +77,7 @@ class Featured extends Extension {
 
 	public function onImageAdminBlockBuilding(ImageAdminBlockBuildingEvent $event) {
 		global $user;
-		if($user->is_admin()) {
+		if($user->can("edit_feature")) {
 			$event->add_part($this->theme->get_buttons_html($event->image->id));
 		}
 	}
diff --git a/contrib/ipban/main.php b/contrib/ipban/main.php
index 4e50c3de..f3346a6c 100644
--- a/contrib/ipban/main.php
+++ b/contrib/ipban/main.php
@@ -49,7 +49,7 @@ class IPBan extends Extension {
 	public function onPageRequest(PageRequestEvent $event) {
 		if($event->page_matches("ip_ban")) {
 			global $config, $database, $page, $user;
-			if($user->is_admin()) {
+			if($user->can("ban_ip")) {
 				if($event->get_arg(0) == "add" && $user->check_auth_token()) {
 					if(isset($_POST['ip']) && isset($_POST['reason']) && isset($_POST['end'])) {
 						if(empty($_POST['end'])) $end = null;
diff --git a/contrib/numeric_score/main.php b/contrib/numeric_score/main.php
index 70ac2379..98aaf45d 100644
--- a/contrib/numeric_score/main.php
+++ b/contrib/numeric_score/main.php
@@ -38,7 +38,7 @@ class NumericScore extends Extension {
 
 	public function onUserPageBuilding(UserPageBuildingEvent $event) {
 		global $page, $user;
-		if($user->is_admin()) {
+		if($user->can("edit_other_votes")) {
 			$html = $this->theme->get_nuller_html($event->display_user);
 			$page->add_block(new Block("Votes", $html, "main", 60));
 		}
@@ -79,7 +79,7 @@ class NumericScore extends Extension {
 			}
 		}
 		if($event->page_matches("numeric_score/remove_votes_on") && $user->check_auth_token()) {
-			if($user->is_admin()) {
+			if($user->can("edit_other_vote")) {
 				$image_id = int_escape($_POST['image_id']);
 				$database->execute(
 						"DELETE FROM numeric_score_votes WHERE image_id=?",
@@ -92,7 +92,7 @@ class NumericScore extends Extension {
 			}
 		}
 		if($event->page_matches("numeric_score/remove_votes_by") && $user->check_auth_token()) {
-			if($user->is_admin()) {
+			if($user->can("edit_other_vote")) {
 				$this->delete_votes_by(int_escape($_POST['user_id']));
 				$page->set_mode("redirect");
 				$page->set_redirect(make_link());
diff --git a/contrib/numeric_score/theme.php b/contrib/numeric_score/theme.php
index b33043e0..fdd2fa90 100644
--- a/contrib/numeric_score/theme.php
+++ b/contrib/numeric_score/theme.php
@@ -30,7 +30,7 @@ class NumericScoreTheme extends Themelet {
 			<input type='submit' value='Vote Down'>
 			</form>
 		";
-		if($user->is_admin()) {
+		if($user->can("edit_other_vote")) {
 			$html .= "
 			<form action='".make_link("numeric_score/remove_votes_on")."' method='POST'>
 			".$user->get_auth_html()."
diff --git a/contrib/pm/main.php b/contrib/pm/main.php
index b1b6f81b..d33c975d 100644
--- a/contrib/pm/main.php
+++ b/contrib/pm/main.php
@@ -90,7 +90,7 @@ class PrivMsg extends Extension {
 		global $page, $user;
 		$duser = $event->display_user;
 		if(!$user->is_anonymous() && !$duser->is_anonymous()) {
-			if(($user->id == $duser->id) || $user->is_admin()) {
+			if(($user->id == $duser->id) || $user->can("view_other_pms")) {
 				$this->theme->display_pms($page, $this->get_pms($duser));
 			}
 			if($user->id != $duser->id) {
@@ -110,7 +110,7 @@ class PrivMsg extends Extension {
 						if(is_null($pm)) {
 							$this->theme->display_error(404, "No such PM", "There is no PM #$pm_id");
 						}
-						else if(($pm["to_id"] == $user->id) || $user->is_admin()) {
+						else if(($pm["to_id"] == $user->id) || $user->can("view_other_pms")) {
 							$from_user = User::by_id(int_escape($pm["from_id"]));
 							$database->execute("UPDATE private_message SET is_read='Y' WHERE id = :id", array("id" => $pm_id));
 							$database->cache->delete("pm-count-{$user->id}");
@@ -127,7 +127,7 @@ class PrivMsg extends Extension {
 							if(is_null($pm)) {
 								$this->theme->display_error(404, "No such PM", "There is no PM #$pm_id");
 							}
-							else if(($pm["to_id"] == $user->id) || $user->is_admin()) {
+							else if(($pm["to_id"] == $user->id) || $user->can("view_other_pms")) {
 								$database->execute("DELETE FROM private_message WHERE id = :id", array("id" => $pm_id));
 								$database->cache->delete("pm-count-{$user->id}");
 								log_info("pm", "Deleted PM #$pm_id");
diff --git a/core/userclass.class.php b/core/userclass.class.php
index e6b219f4..be8acb16 100644
--- a/core/userclass.class.php
+++ b/core/userclass.class.php
@@ -68,6 +68,7 @@ new UserClass("base", null, array(
 	"ban_image" => False,
 
 	"view_eventlog" => False,
+	"ignore_downtime" => False,
 
 	"create_image_report" => False,
 	"view_image_report" => False,  # deal with reported images
@@ -79,6 +80,11 @@ new UserClass("base", null, array(
 
 	"manage_admintools" => False,
 
+	"view_other_pms" => False,
+	"edit_feature" => False,
+	"bulk_edit_vote" => False,
+	"edit_other_vote" => False,
+
 	"protected" => False,          # only admins can modify protected users (stops a moderator changing an admin's password)
 ));
 
@@ -123,6 +129,11 @@ new UserClass("admin", "base", array(
 	"view_eventlog" => True,
 	"manage_blocks" => True,
 	"manage_admintools" => True,
+	"ignore_downtime" => True,
+	"view_other_pms" => True,
+	"edit_feature" => True,
+	"bulk_edit_vote" => True,
+	"edit_other_vote" => True,
 	"protected" => True,
 ));