diff -Nur dotclear-2.2.0/inc/core/class.dc.meta.php dotclear/inc/core/class.dc.meta.php
--- dotclear-2.2.0/inc/core/class.dc.meta.php	2010-08-29 21:35:30.000000000 +0200
+++ dotclear/inc/core/class.dc.meta.php	2010-08-29 21:30:46.000000000 +0200
@@ -23,7 +23,49 @@
 	private $core;	///< <b>dcCore</b> dcCore instance
 	private $con;	///< <b>connection</b>	Database connection object
 	private $table;	///< <b>string</b> Media table name
-	
+
+	function calcTagPercent($count, $min, $max) {
+		$borneInf = 5;
+		$borneSup = 50;
+		$normalisation = true;
+		$bornage = true;
+		$func = "log";
+		
+		if ($max == $min) {
+			return 100;
+		}
+		
+		if ($normalisation) {
+			if ($bornage) {
+				$borneInf = max($borneInf, $min);
+				$borneSup = min($borneSup, $max);
+			}
+			else {
+				$borneInf = $min;
+				$borneSup = $max;
+				$bornage = true;
+			}
+		}
+		
+		if (!$bornage || $borneSup <= $borneInf) {
+			$borneSup = $max;
+			$borneInf = $min * $normalisation;
+		}
+		
+		$count2 = max(0, min($count, $borneSup) - $borneInf);
+		$max2 = $borneSup - $borneInf;
+		
+		if ($func == "log") {
+			return (integer) (log($count2 + 1) * 100 / log($max2 + 1));
+		}
+		else if ($func == "exp") {
+			return (integer) (exp($count2) * 100 / exp($max2));
+		}
+		else {
+			return (integer) $count2 * 100 / $max2;
+		}
+	}
+    
 	/**
 	Object constructor.
 	
@@ -389,15 +431,20 @@
 		$rs_static = $rs->toStatic();
 		
 		$max = array();
+		$min = array();
 		while ($rs_static->fetch())
 		{
 			$type = $rs_static->meta_type;
 			if (!isset($max[$type])) {
 				$max[$type] = $rs_static->count;
+				$min[$type] = $rs_static->count;
 			} else {
 				if ($rs_static->count > $max[$type]) {
 					$max[$type] = $rs_static->count;
 				}
+				else if ($rs_static->count < $min[$type]) {
+					$min[$type] = $rs_static->count;
+				}
 			}
 		}
 		
@@ -406,7 +453,12 @@
 			$rs_static->set('meta_id_lower',mb_strtolower($rs_static->meta_id));
 			
 			$count = $rs_static->count;
-			$percent = ((integer) $rs_static->count) * 100 / $max[$rs_static->meta_type];
+			if ($rs_static->meta_type == "tag") {
+				$percent = $this->calcTagPercent((integer) $rs_static->count, $min["tag"], $max["tag"]);
+			}
+			else {
+				$percent = ((integer) $rs_static->count) * 100 / $max[$rs_static->meta_type];
+			}
 			
 			$rs_static->set('percent',(integer) round($percent));
 			$rs_static->set('roundpercent',round($percent/10)*10);