diff --git a/MySqlSessionHandler.php b/MySqlSessionHandler.php
index 6a9774b..d5d3194 100644
--- a/MySqlSessionHandler.php
+++ b/MySqlSessionHandler.php
@@ -61,10 +61,10 @@ public function setDbTable($dbTable)
      */
     public function open()
     {
-        //delete old session handlers
-        $limit = time() - (3600 * 24);
-        $sql = sprintf("DELETE FROM %s WHERE timestamp < %s", $this->dbTable, $limit);
-        return $this->dbConnection->query($sql);
+        if (!is_a($this->dbConnection, 'mysqli')){
+            throw new Exception('No session DB connection.');
+        }
+        return true;
     }
 
     /**
@@ -106,11 +106,14 @@ public function read($id)
     public function write($id, $data)
     {
 
-        $sql = sprintf("REPLACE INTO %s VALUES('%s', '%s', '%s')",
+        $sql = sprintf("REPLACE INTO %s VALUES('%s', '%s', '%s', '%s', '%s')",
                        $this->dbTable,
                        $this->dbConnection->escape_string($id),
                        $this->dbConnection->escape_string($data),
-                       time());
+                       time(),
+                       $this->dbConnection->escape_string($_SERVER['REMOTE_ADDR']),
+                       $this->dbConnection->escape_string($_SESSION['hits'])
+        );
         return $this->dbConnection->query($sql);
     }
 
@@ -137,6 +140,12 @@ public function destroy($id)
      */
     public function gc($max)
     {
+        //Delete single use sessions (search-bots etc.)
+        $limit = time() - (3600 * 5);
+        $sql = sprintf("DELETE FROM %s WHERE hits=1 AND timestamp < %s", $this->dbTable, $limit);
+        $this->dbConnection->query($sql);
+        
+        //Delete according to GC $max age setting
         $sql = sprintf("DELETE FROM %s WHERE `timestamp` < '%s'", $this->dbTable, time() - intval($max));
         return $this->dbConnection->query($sql);
     }
diff --git a/README.md b/README.md
index 1ce5e6b..ff0ddcf 100644
--- a/README.md
+++ b/README.md
@@ -8,12 +8,14 @@ This class is old and I am personally not using it anymore. Maintenance is very
 ## Usage
 Create a table in your database:
 
-    CREATE TABLE `session_handler_table` (
-    `id` varchar(255) NOT NULL,
-    `data` mediumtext NOT NULL,
-    `timestamp` int(255) NOT NULL,
-    PRIMARY KEY (`id`)
-    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+CREATE TABLE IF NOT EXISTS `sessions` (
+  `id` varchar(50) NOT NULL,
+  `data` mediumtext NOT NULL,
+  `timestamp` int(255) NOT NULL,
+  `ip` varchar(255) NOT NULL,
+  `hits` int(11) NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
 Then have a look at [example.php](example.php).<br>