Select Code to Download

s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

use strict;
use warnings 'all';
...
close FILE;

print $bob;

Problems:

...
13) Does not allow for mailing list references within a form and thus
    hiding all emails within the web page and prevent spam harvesting.
14) Appears to suffer from the poison null byte issue.