http://www.perlmonks.org?node_id=350785


in reply to Another way to get around automated bots

And again, this is a technical solution that has legal ramifications preventing its use for all but tiny toy sites.

I also don't see the advantage to just using a simple image. For one, you just punished a dialup user pretty badly.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.