I'll second ReCAPTCHA as being solid. It has a great interface and is easy to use.
On Mon, Nov 22, 2010 at 10:01 AM, Joao Prado Maia <[address removed]>
I recommend ReCAPTCHA: http://www.google.com/recaptcha. Works great and I've used it in many projects.
On Nov 22, 2010, at 9:17 AM, Miguel Martinez wrote:
> I'm adding a CAPTCHA feature to a contact form for a client. There is a number of PHP CAPTCHA, but I would like to know what you folks have used and what you recommend.
> Thank you,
> Miguel Martinez
> Web Developer
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