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