diff --git a/ext/artists/main.php b/ext/artists/main.php
index d426d512..984b12af 100644
--- a/ext/artists/main.php
+++ b/ext/artists/main.php
@@ -45,7 +45,7 @@ class Artists extends Extension {
 
 	public function onSearchTermParse(SearchTermParseEvent $event) {
 		$matches = array();
-		if(preg_match("/^author=(.*)$/", $event->term, $matches)) {
+		if(preg_match("/^author[=|:](.*)$/", $event->term, $matches)) {
 			$char = $matches[1];
 			$event->add_querylet(new Querylet("Author = :author_char", array("author_char"=>$char)));
 		}
diff --git a/ext/comment/main.php b/ext/comment/main.php
index 48d4f013..1c472626 100644
--- a/ext/comment/main.php
+++ b/ext/comment/main.php
@@ -262,12 +262,12 @@ class CommentList extends Extension {
 
 	public function onSearchTermParse(SearchTermParseEvent $event) {
 		$matches = array();
-		if(preg_match("/comments(<|>|<=|>=|=)(\d+)/", $event->term, $matches)) {
-			$cmp = $matches[1];
+		if(preg_match("/^comments([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(\d+)$/", $event->term, $matches)) {
+			$cmp = ltrim($matches[1], ":") ?: "=";
 			$comments = $matches[2];
 			$event->add_querylet(new Querylet("images.id IN (SELECT DISTINCT image_id FROM comments GROUP BY image_id HAVING count(image_id) $cmp $comments)"));
 		}
-		else if(preg_match("/commented_by=(.*)/i", $event->term, $matches)) {
+		else if(preg_match("/^commented_by[=|:](.*)$/i", $event->term, $matches)) {
 			global $database;
 			$user = User::by_name($matches[1]);
 			if(!is_null($user)) {
@@ -279,7 +279,7 @@ class CommentList extends Extension {
 
 			$event->add_querylet(new Querylet("images.id IN (SELECT image_id FROM comments WHERE owner_id = $user_id)"));
 		}
-		else if(preg_match("/commented_by_userid=([0-9]+)/i", $event->term, $matches)) {
+		else if(preg_match("/^commented_by_userno[=|:]([0-9]+)$/i", $event->term, $matches)) {
 			$user_id = int_escape($matches[1]);
 			$event->add_querylet(new Querylet("images.id IN (SELECT image_id FROM comments WHERE owner_id = $user_id)"));
 		}
diff --git a/ext/index/main.php b/ext/index/main.php
index 45f71f02..bd4f3e30 100644
--- a/ext/index/main.php
+++ b/ext/index/main.php
@@ -105,6 +105,8 @@
  *        <li>score (=, &lt;, &gt;, &lt;=, &gt;=) number -- seach by score
  *        <li>upvoted_by=Username -- search for a user's likes
  *        <li>downvoted_by=Username -- search for a user's dislikes
+ *        <li>upvoted_by_id=UserID -- search for a user's likes by user ID
+ *        <li>downvoted_by_id=UserID -- search for a user's dislikes by user ID
  *      </ul>
  *    <li>Image Rating
  *      <ul>
@@ -122,6 +124,16 @@
  *        <li>notes_by=Username -- search for a notes created by username
  *        <li>notes_by_userno=UserID -- search for a notes created by userID
  *      </ul>
+ *    <li>Artists
+ *      <ul>
+ *        <li>author=ArtistName -- search for images by artist
+ *      </ul>
+ *    <li>Image Comments
+ *      <ul>
+ *        <li>comments (=, &lt;, &gt;, &lt;=, &gt;=) number -- search for images by number of comments
+ *        <li>commented_by=Username -- search for a user's comments by username
+ *        <li>commented_by_userno=UserID -- search for a user's comments by userID
+ *      </ul>
  *  </ul>
  */
 
diff --git a/ext/numeric_score/main.php b/ext/numeric_score/main.php
index 9cf21ab3..2da74577 100644
--- a/ext/numeric_score/main.php
+++ b/ext/numeric_score/main.php
@@ -217,12 +217,12 @@ class NumericScore extends Extension {
 
 	public function onSearchTermParse(SearchTermParseEvent $event) {
 		$matches = array();
-		if(preg_match("/^score(<|<=|=|>=|>)(-?\d+)$/", $event->term, $matches)) {
-			$cmp = $matches[1];
+		if(preg_match("/^score([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])(-?\d+)$/", $event->term, $matches)) {
+			$cmp = ltrim($matches[1], ":") ?: "=";
 			$score = $matches[2];
 			$event->add_querylet(new Querylet("numeric_score $cmp $score"));
 		}
-		if(preg_match("/^upvoted_by=(.*)$/", $event->term, $matches)) {
+		if(preg_match("/^upvoted_by[=|:](.*)$/", $event->term, $matches)) {
 			$duser = User::by_name($matches[1]);
 			if(is_null($duser)) {
 				throw new SearchTermParseException(
@@ -232,7 +232,7 @@ class NumericScore extends Extension {
 				"images.id in (SELECT image_id FROM numeric_score_votes WHERE user_id=:ns_user_id AND score=1)",
 				array("ns_user_id"=>$duser->id)));
 		}
-		if(preg_match("/^downvoted_by=(.*)$/", $event->term, $matches)) {
+		if(preg_match("/^downvoted_by[=|:](.*)$/", $event->term, $matches)) {
 			$duser = User::by_name($matches[1]);
 			if(is_null($duser)) {
 				throw new SearchTermParseException(
@@ -242,13 +242,13 @@ class NumericScore extends Extension {
 				"images.id in (SELECT image_id FROM numeric_score_votes WHERE user_id=:ns_user_id AND score=-1)",
 				array("ns_user_id"=>$duser->id)));
 		}
-		if(preg_match("/^upvoted_by_id=(\d+)$/", $event->term, $matches)) {
+		if(preg_match("/^upvoted_by_id[=|:](\d+)$/", $event->term, $matches)) {
 			$iid = int_escape($matches[1]);
 			$event->add_querylet(new Querylet(
 				"images.id in (SELECT image_id FROM numeric_score_votes WHERE user_id=:ns_user_id AND score=1)",
 				array("ns_user_id"=>$iid)));
 		}
-		if(preg_match("/^downvoted_by_id=(\d+)$/", $event->term, $matches)) {
+		if(preg_match("/^downvoted_by_id[=|:](\d+)$/", $event->term, $matches)) {
 			$iid = int_escape($matches[1]);
 			$event->add_querylet(new Querylet(
 				"images.id in (SELECT image_id FROM numeric_score_votes WHERE user_id=:ns_user_id AND score=-1)",