And you thought I'd let get away without forcing an XML::Twig version upon you?
Of course you need a recent (3.00.18 or above) version of the module in order to get the parseurl method, otherwise you will need to use LWP to get the text first.
#!/bin/perl -w
use strict;
use XML::Twig;
use constant URL => q{http://perlmonks.org/index.pl?node=chatterbox+xm
+l+ticker};
my $t= XML::Twig->new( twig_handlers => { message => \&display_message
+ });
$t->parseurl( URL);
sub display_message
{ my( $t, $msg)= @_;
my $auth = $msg->att( 'author');
my $cont = $msg->text;
my $time = $msg->att( 'time');
my ($h,$m,$s) = $time =~ /^\d{8}(\d\d)(\d\d)(\d\d)$/;
$cont =~ s/\n//g;
$cont =~ s/^\/me/$auth/;
print "$h:$m:$s - [$auth] $cont\n";
}