In case there's anyone else who doesn't like all the outside links on the Leftover nodelet which otherwise has important in-site navigation links too, here's the rule. Just copy to the personal CSS box in Display Settings.
/* hide some links from the nodelets */
.nodelet#leftovers a[href="http://www.cafepress.com/perlmonks,perlmonk
+s_too,pm_more"], .nodelet#leftovers a[href="http://www.cafepress.com/
+perlmonks,perlmonks_too,pm_more"] + br,
a[href="http://perlbuzz.com/"], .nodelet#leftovers a[href="http://perl
+buzz.com/"] + br,
a[href="http://perl.com/"], .nodelet#leftovers a[href="http://perl.com
+/"] + br,
a[href="http://www.perlfoundation.org/perl5/index.cgi"], .nodelet#left
+overs a[href="http://www.perlfoundation.org/perl5/index.cgi"] + br,
a[href="http://jobs.perl.org/"], .nodelet#leftovers a[href="http://job
+s.perl.org/"] + br,
a[href="http://www.pm.org/"], .nodelet#leftovers a[href="http://www.pm
+.org/"] + br,
a[href="http://planet.perl.org/"], .nodelet#leftovers a[href="http://p
+lanet.perl.org/"] + br,
a[href="http://use.perl.org/"], .nodelet#leftovers a[href="http://use.
+perl.org/"] + br,
a[href="http://www.perl.org/"], .nodelet#leftovers a[href="http://www.
+perl.org/"] + br
{ display: none }
Note: this doesn't hide the Perl Documentation link and the link to CPAN. Add those too if you want.
Update:
Fixed the rules to hide those remaining two links as well, for I decided I don't need those either. Here's the new rule:
.nodelet#leftovers a[href="http://www.cafepress.com/perlmonks,perlmonk
+s_too,pm_more"], .nodelet#leftovers a[href="http://www.cafepress.com/
+perlmonks,perlmonks_too,pm_more"] + br,
.nodelet#leftovers a[href="http://perlbuzz.com/"], .nodelet#leftovers
+a[href="http://perlbuzz.com/"] + br,
.nodelet#leftovers a[href="http://perl.com/"], .nodelet#leftovers a[hr
+ef="http://perl.com/"] + br,
.nodelet#leftovers a[href="http://www.perlfoundation.org/perl5/index.c
+gi"], .nodelet#leftovers a[href="http://www.perlfoundation.org/perl5/
+index.cgi"] + br,
.nodelet#leftovers a[href="http://jobs.perl.org/"], .nodelet#leftovers
+ a[href="http://jobs.perl.org/"] + br,
.nodelet#leftovers a[href="http://www.pm.org/"], .nodelet#leftovers a[
+href="http://www.pm.org/"] + br,
.nodelet#leftovers a[href="http://planet.perl.org/"], .nodelet#leftove
+rs a[href="http://planet.perl.org/"] + br,
.nodelet#leftovers a[href="http://use.perl.org/"], .nodelet#leftovers
+a[href="http://use.perl.org/"] + br,
.nodelet#leftovers a[href="http://www.perl.org/"], .nodelet#leftovers
+a[href="http://www.perl.org/"] + br,
.nodelet#leftovers a[href="http://perldoc.perl.org/"], .nodelet#leftov
+ers a[href="http://perldoc.perl.org/"] + br,
.nodelet#leftovers a[href="http://cpan.perl.org/"], .nodelet#leftovers
+ a[href="http://cpan.perl.org/"] + br
{ display: none }
Update: added newlines to the css rules, I hope that doesn't break it.