diff --git a/clusterssh/ChangeLog b/clusterssh/ChangeLog
index d4222d5..ad3d4d0 100644
--- a/clusterssh/ChangeLog
+++ b/clusterssh/ChangeLog
@@ -23,6 +23,7 @@
   starting a new column - see .csshrc doc for "max_host_menu_items".
   This is until Tk allows for scrollable menus
 * Amend default key_addhost from 'Control-plus' to 'Control-Shift-plus'
+* Add in a 'default' cluster tag, used when no tags provided on command line
 
 2009-03-26 Duncan Ferguson <duncan_ferguson@user.sf.net> - v3.25-1
 
diff --git a/clusterssh/src/cssh.pl b/clusterssh/src/cssh.pl
index 647cffe..e53b440 100755
--- a/clusterssh/src/cssh.pl
+++ b/clusterssh/src/cssh.pl
@@ -952,7 +952,8 @@ sub split_hostname {
                # could have an invalid IPv6 address here, but the connect
                # method will warn if it cannot connect anyhow
                # However, this also catchs IPv4 addresses, possibly with ports
-                ( $server, $port ) = $connect_string =~ m/^([\w.-]+)(?::(\d+))?$/xsm;
+                ( $server, $port )
+                    = $connect_string =~ m/^([\w.-]+)(?::(\d+))?$/xsm;
             }
         }
     }
@@ -2034,7 +2035,14 @@ load_keyboard_map();
 
 get_clusters();
 
-@servers = resolve_names(@ARGV);
+if (@ARGV) {
+    @servers = resolve_names(@ARGV);
+}
+else {
+    if ( $clusters{default} ) {
+        @servers = resolve_names( split( /\s+/, $clusters{default} ) );
+    }
+}
 
 create_windows();
 create_menubar();
@@ -2393,6 +2401,10 @@ Clusters may also be specified either directly (see C<clusters> configuration
 options) or indirectly (see C<extra_cluster_file> configuration option) 
 in the users F<$HOME/.csshrc> file.
 
+NOTE: there is a special cluster tag called C<default> - any tags or hosts
+included within this tag will be automatically opened if no other tags
+are specified on the command line.
+
 =item F</etc/csshrc> & F<$HOME/.csshrc>
 
 This file contains configuration overrides - the defaults are as marked.