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still just me <wheeledBobNOSPAM [at] yahoo.com> writes:

> I'd google it, but I'm not even sure what the industry buzzword to
> describe these is (heads up appreciated!).

The word you're lookinf for is CAPTHCA
http://en.wikipedia.org/wiki/CAPTCHA

> Alternatively, if anyone has a pointer to some specific code and/or
> snippets they like to use, that would be great too.

And CPAN has a lot of modules related to captchas
http://search.cpan.org/search?query=Captcha&mode=all

//Makholm

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