two tracks proceeding in parallel - first adding the ability to store a digital signature with ratings so that directories can pass them around, second provide some directory registration functions so we can obtain a list of directories from somewhere (to pass ratings around between them). This gives the primary directory role some value as that is where you register your directory.

install/update.php

@@ -1,6 +1,6 @@
 <?php
 
-define( 'UPDATE_VERSION' , 1135 );
+define( 'UPDATE_VERSION' , 1136 );
 
 /**
  *
@@ -1549,4 +1549,11 @@ function update_r1134() {
 	if($r)
 		return UPDATE_SUCCESS;
 	return UPDATE_FAILED;
+}
+
+function update_r1135() {
+	$r = q("ALTER TABLE xlink ADD xlink_sig TEXT NOT NULL DEFAULT ''");
+	if($r)
+		return UPDATE_SUCCESS;
+	return UPDATE_FAILED;
 }