See, it is confusing to me, to see those five special rules, of which 
only Spam is active for me. And then there are all those non-special 
(user defined) rules that I toggle regularly, which are not displayed.
Maybe a switch to turn this on might be a good solution for the portal block.
I will send you the patch, when we have agreed on something.

The patch doesn't apply, please upload a patch file, don't paste it. 
Also, the order of the rules doesn't seem to be the same on the 
overview page and the block. Inactive special rules are not displayed 
correctly. And finally, this is making the block rather confusing when 
you have large lists, so I'm not sure if it's a good idea at all to 
include non-special rules too.

the following patch adds the user rules to the portal block:

diff --git a/ingo/lib/Block/Overview.php b/ingo/lib/Block/Overview.php
index 9325986..e5b1fe5 100644
--- a/ingo/lib/Block/Overview.php
+++ b/ingo/lib/Block/Overview.php
@@ -34,7 +34,7 @@ class Ingo_Block_Overview extends Horde_Core_Block
          $html = '<table width="100%" height="100%">';
          $html_pre = '<tr><td valign="top">';
          $html_post = '</td></tr>';
-        foreach ($filters->getFilterList() as $filter) {
+        foreach ($filters->getFilterList() as $rule_number => $filter) {
              if (!empty($filter['disable'])) {
                  $active = _("inactive");
              } else {
@@ -97,6 +97,13 @@ class Ingo_Block_Overview extends Horde_Core_Block
                          _("Spam Filter") . '</a> ' . $active . $html_post;
                  }
                  break;
+
+            default:
+               $editurl = 
Horde::url('rule.php')->copy()->add(array('edit' => $rule_number, 
'actionID' => 'rule_edit'));
+               $html .= $html_pre . '</td><td>' .
+                       Horde::link($editurl, sprintf(_("Edit %s"), 
$filter['name'])) .
+                       $filter['name'] . '</a> ' . $active . $html_post;
+                break;
              }

          }