You should also have a look under the Best Nodes section on Perl Monks. There is a very interesting node called something like 'Having fun with Merlyn', which is about 'Anti-Harvester' and 'Anti-anti-Harvester'. merlyn has plenty of articles on anti-harvester and web security on his website at stonehenge, you will have to search for them.

In reply to Re: Code to Block Scripts/Harwesters (GD based?) by Roger
in thread Code to Block Scripts/Harwesters (GD based?) by PetaMem

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