I hope its a typo, but you have invalid HTML there :-)
That should be href="http://www.perlmonks.org"and so I suggest using HTML::Parser or HTML::TokeParser to find all anchor tags and then determine whether they have an invalid argument value, eg. that wrong syntax with missing " and omitted protocol.
And yes, the links go to perl monks search pages as this is the easy way to learn from others expieriences and at the bottom of those search pages you can search CPAN where you find the modules and their manpages :-)

Have a nice day
All decision is left to your taste