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Why should we nuke the spammers

Thu, 06/07/2007 - 10:07 | by Mgccl

....because one day, this kind of CAPTCHAS is going to be every where.
Examples of animated captcha:

Examples of math captcha:
Crazy Math Captcha

\sum _{n=0}^{\infty} \frac{(\int _{-\infty}^{\infty}\exp(-a^2)da)^2 \oint \frac{dz}{z}}{4{\prod_{k=1}^\infty(\frac{n+1}{n})^{(-1)}^{n-1}} n!} = i\sum _{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)!} + \sum _{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)!}

Examples of logic captcha:
The smallest positive integer not definable in under eleven words:


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Comments

by Visitor Ping Hacks (not verified) | Sat, 06/09/2007 - 08:31
Anonymous's picture

I wet my pants

"solve for x", that was the funniest thing i have seen on the internet all week, thanks!

by Mgccl | Sat, 06/09/2007 - 18:06
Mgccl's picture

Glad you liked it :) Some

Glad you liked it :)
Some spammers hires people for like 10 dollar a hour to break into easy CAPTCHAs, like the math one I got on this website.

by Anonymous (not verified) | Fri, 03/21/2008 - 00:38
Anonymous's picture

whats the web site?

whats the web site?

by Dane (not verified) | Sun, 03/30/2008 - 19:44
Anonymous's picture

math captcha

I've been all over the web trying to find a randomly generated math captcha (or just math) for verifying a simple contact form. Lots of 'close-but-no-cigars'. One of the links Googled led me here.

Any possibility of getting the source for your form and math?

gdane

by Mgccl | Sun, 03/30/2008 - 20:22
Mgccl's picture

It's a joke... there is no

It's a joke... there is no math CAPTCHA that hard. but there is very challenging math captcha out there. hope you find that fun.
Most college professors would need at least an hour to solve math CAPTCHAs like mine, unless they just cheat by using computer to calculate the approximation and take a good guess.

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