Posted by Curtis on 02/12/07 07:29

Fred of UrlBit.Us wrote:
> Sebastian Stein wrote:
>
>> Hi,
>>
>> you probably know the comment SPAM problem. If you have a homepage and
>> want to allow your users to post a comment you will end up getting a lot
>> of SPAM posts from robots.
>>
>> I was thinking that there might be some free/opensource plugin available
>> to create such images with numbers on it. I don't want to reinvent the
>> wheel. Can anyone point me to something like that or tell me the correct
>> keywords for searching for it by myself?
>
> Search on CAPTCHA. There's tons of ways to do it. Conversely, you might want
> to check out hotscripts.com for the same.
>

Be careful on hotscripts, oftentime, poorly written code is propagated
from there. Also Google pwncha, as many CAPTCHAs (like phpBB2's) are
very easily cracked.

I attempted to write a CAPTCHA class at one point, on my site, but
more could be added to it to make it better:
<http://dyersweb.com/projects/captcha>. I'm not trying to peddle it
out to anyone, just an example. :-P

Curtis

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