Need to strip out the HTML comment <!-- x --> on the link; the url for you is actually:
http://rt.perl.org/rt3/NoAuth/parrot/List.html?Field=Requestor&[EMAIL PROTECTED] Not the given: http://rt.perl.org/rt3/NoAuth/parrot/List.html?Field=Requestor&Value=jkeen%20%3C!--%20x%20--%3E%20at%20verizon.net